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Finding the Fourth Proportional to 607,009.20, 910,513.80 and 418,052.40

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Solution

The fourth proportional to 607,009.20, 910,513.80 and 418,052.40 is: 627,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,009.20 : 910,513.80 = 418,052.40 : x
  2. Step 2: Convert to fraction form
    607,009.20/910,513.80 = 418,052.40/x
  3. Step 3: Cross multiply
    607,009.20x = 910,513.80 × 418,052.40
  4. Step 4: Simplify right side
    607,009.20x = 380,642,479,323.12
  5. Step 5: Solve for x
    x = 380,642,479,323.12/607,009.20
  6. Step 6: Final answer
    x = 627,078.60

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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.