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Finding the Fourth Proportional to 604,910.10, 907,365.15 and 394,785.30

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Solution

The fourth proportional to 604,910.10, 907,365.15 and 394,785.30 is: 592,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,910.10 : 907,365.15 = 394,785.30 : x
  2. Step 2: Convert to fraction form
    604,910.10/907,365.15 = 394,785.30/x
  3. Step 3: Cross multiply
    604,910.10x = 907,365.15 × 394,785.30
  4. Step 4: Simplify right side
    604,910.10x = 358,214,422,952.30
  5. Step 5: Solve for x
    x = 358,214,422,952.30/604,910.10
  6. Step 6: Final answer
    x = 592,177.95

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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.