Home / 929,168.20-1,392,002.70-478,354.60

Finding the Fourth Proportional to 929,168.20, 1,392,002.70 and 478,354.60

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Solution

The fourth proportional to 929,168.20, 1,392,002.70 and 478,354.60 is: 716,631.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,168.20 : 1,392,002.70 = 478,354.60 : x
  2. Step 2: Convert to fraction form
    929,168.20/1,392,002.70 = 478,354.60/x
  3. Step 3: Cross multiply
    929,168.20x = 1,392,002.70 × 478,354.60
  4. Step 4: Simplify right side
    929,168.20x = 665,870,894,757.42
  5. Step 5: Solve for x
    x = 665,870,894,757.42/929,168.20
  6. Step 6: Final answer
    x = 716,631.17

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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.