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Finding the Fourth Proportional to 609,008.83, 840,402.20 and 347,374.47

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Solution

The fourth proportional to 609,008.83, 840,402.20 and 347,374.47 is: 479,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,008.83 : 840,402.20 = 347,374.47 : x
  2. Step 2: Convert to fraction form
    609,008.83/840,402.20 = 347,374.47/x
  3. Step 3: Cross multiply
    609,008.83x = 840,402.20 × 347,374.47
  4. Step 4: Simplify right side
    609,008.83x = 291,934,272,831.78
  5. Step 5: Solve for x
    x = 291,934,272,831.78/609,008.83
  6. Step 6: Final answer
    x = 479,359.67

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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.