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Finding the Fourth Proportional to 604,979.20, 907,906.20 and 338,456.80

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Solution

The fourth proportional to 604,979.20, 907,906.20 and 338,456.80 is: 507,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,979.20 : 907,906.20 = 338,456.80 : x
  2. Step 2: Convert to fraction form
    604,979.20/907,906.20 = 338,456.80/x
  3. Step 3: Cross multiply
    604,979.20x = 907,906.20 × 338,456.80
  4. Step 4: Simplify right side
    604,979.20x = 307,287,027,152.16
  5. Step 5: Solve for x
    x = 307,287,027,152.16/604,979.20
  6. Step 6: Final answer
    x = 507,929.90

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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.