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Finding the Fourth Proportional to 624,310.48, 861,337.59 and 406,419.67

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Solution

The fourth proportional to 624,310.48, 861,337.59 and 406,419.67 is: 560,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,310.48 : 861,337.59 = 406,419.67 : x
  2. Step 2: Convert to fraction form
    624,310.48/861,337.59 = 406,419.67/x
  3. Step 3: Cross multiply
    624,310.48x = 861,337.59 × 406,419.67
  4. Step 4: Simplify right side
    624,310.48x = 350,064,539,086.40
  5. Step 5: Solve for x
    x = 350,064,539,086.40/624,310.48
  6. Step 6: Final answer
    x = 560,721.87

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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.