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Finding the Fourth Proportional to 667,632.38, 921,332.68 and 365,819.90

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Solution

The fourth proportional to 667,632.38, 921,332.68 and 365,819.90 is: 504,831.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,632.38 : 921,332.68 = 365,819.90 : x
  2. Step 2: Convert to fraction form
    667,632.38/921,332.68 = 365,819.90/x
  3. Step 3: Cross multiply
    667,632.38x = 921,332.68 × 365,819.90
  4. Step 4: Simplify right side
    667,632.38x = 337,041,823,343.12
  5. Step 5: Solve for x
    x = 337,041,823,343.12/667,632.38
  6. Step 6: Final answer
    x = 504,831.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.