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Finding the Fourth Proportional to 885,806.55, 1,326,711.96 and 411,493.77

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Solution

The fourth proportional to 885,806.55, 1,326,711.96 and 411,493.77 is: 616,312.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,806.55 : 1,326,711.96 = 411,493.77 : x
  2. Step 2: Convert to fraction form
    885,806.55/1,326,711.96 = 411,493.77/x
  3. Step 3: Cross multiply
    885,806.55x = 1,326,711.96 × 411,493.77
  4. Step 4: Simplify right side
    885,806.55x = 545,933,706,124.49
  5. Step 5: Solve for x
    x = 545,933,706,124.49/885,806.55
  6. Step 6: Final answer
    x = 616,312.56

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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.