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Finding the Fourth Proportional to 646,213.17, 891,773.85 and 359,800.92

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Solution

The fourth proportional to 646,213.17, 891,773.85 and 359,800.92 is: 496,525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,213.17 : 891,773.85 = 359,800.92 : x
  2. Step 2: Convert to fraction form
    646,213.17/891,773.85 = 359,800.92/x
  3. Step 3: Cross multiply
    646,213.17x = 891,773.85 × 359,800.92
  4. Step 4: Simplify right side
    646,213.17x = 320,861,053,011.20
  5. Step 5: Solve for x
    x = 320,861,053,011.20/646,213.17
  6. Step 6: Final answer
    x = 496,525.09

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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.