Home / 1,211,274,307.80-1,816,911,461.70-393,469,277.40

Finding the Fourth Proportional to 1,211,274,307.80, 1,816,911,461.70 and 393,469,277.40

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Solution

The fourth proportional to 1,211,274,307.80, 1,816,911,461.70 and 393,469,277.40 is: 590,203,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,274,307.80 : 1,816,911,461.70 = 393,469,277.40 : x
  2. Step 2: Convert to fraction form
    1,211,274,307.80/1,816,911,461.70 = 393,469,277.40/x
  3. Step 3: Cross multiply
    1,211,274,307.80x = 1,816,911,461.70 × 393,469,277.40
  4. Step 4: Simplify right side
    1,211,274,307.80x = 714,898,839,934,876,800
  5. Step 5: Solve for x
    x = 714,898,839,934,876,800/1,211,274,307.80
  6. Step 6: Final answer
    x = 590,203,916.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.