Home / 1,213,417.80-1,820,126.70-414,579.60

Finding the Fourth Proportional to 1,213,417.80, 1,820,126.70 and 414,579.60

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Solution

The fourth proportional to 1,213,417.80, 1,820,126.70 and 414,579.60 is: 621,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,417.80 : 1,820,126.70 = 414,579.60 : x
  2. Step 2: Convert to fraction form
    1,213,417.80/1,820,126.70 = 414,579.60/x
  3. Step 3: Cross multiply
    1,213,417.80x = 1,820,126.70 × 414,579.60
  4. Step 4: Simplify right side
    1,213,417.80x = 754,587,399,235.32
  5. Step 5: Solve for x
    x = 754,587,399,235.32/1,213,417.80
  6. Step 6: Final answer
    x = 621,869.40

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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.