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Finding the Fourth Proportional to 605,665.20, 907,477.20 and 478,819.20

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Solution

The fourth proportional to 605,665.20, 907,477.20 and 478,819.20 is: 717,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,665.20 : 907,477.20 = 478,819.20 : x
  2. Step 2: Convert to fraction form
    605,665.20/907,477.20 = 478,819.20/x
  3. Step 3: Cross multiply
    605,665.20x = 907,477.20 × 478,819.20
  4. Step 4: Simplify right side
    605,665.20x = 434,517,506,922.24
  5. Step 5: Solve for x
    x = 434,517,506,922.24/605,665.20
  6. Step 6: Final answer
    x = 717,421.95

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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.