Home / 1,211,274,015.80-1,816,911,023.70-393,468,985.40

Finding the Fourth Proportional to 1,211,274,015.80, 1,816,911,023.70 and 393,468,985.40

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Solution

The fourth proportional to 1,211,274,015.80, 1,816,911,023.70 and 393,468,985.40 is: 590,203,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,274,015.80 : 1,816,911,023.70 = 393,468,985.40 : x
  2. Step 2: Convert to fraction form
    1,211,274,015.80/1,816,911,023.70 = 393,468,985.40/x
  3. Step 3: Cross multiply
    1,211,274,015.80x = 1,816,911,023.70 × 393,468,985.40
  4. Step 4: Simplify right side
    1,211,274,015.80x = 714,898,137,057,314,304
  5. Step 5: Solve for x
    x = 714,898,137,057,314,304/1,211,274,015.80
  6. Step 6: Final answer
    x = 590,203,478.10

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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.