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Finding the Fourth Proportional to 557,132.70, 835,699.05 and 521,703.30

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Solution

The fourth proportional to 557,132.70, 835,699.05 and 521,703.30 is: 782,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,132.70 : 835,699.05 = 521,703.30 : x
  2. Step 2: Convert to fraction form
    557,132.70/835,699.05 = 521,703.30/x
  3. Step 3: Cross multiply
    557,132.70x = 835,699.05 × 521,703.30
  4. Step 4: Simplify right side
    557,132.70x = 435,986,952,191.87
  5. Step 5: Solve for x
    x = 435,986,952,191.87/557,132.70
  6. Step 6: Final answer
    x = 782,554.95

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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.