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Finding the Fourth Proportional to 662,663.80, 993,995.70 and 557,687.80

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Solution

The fourth proportional to 662,663.80, 993,995.70 and 557,687.80 is: 836,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,663.80 : 993,995.70 = 557,687.80 : x
  2. Step 2: Convert to fraction form
    662,663.80/993,995.70 = 557,687.80/x
  3. Step 3: Cross multiply
    662,663.80x = 993,995.70 × 557,687.80
  4. Step 4: Simplify right side
    662,663.80x = 554,339,275,142.46
  5. Step 5: Solve for x
    x = 554,339,275,142.46/662,663.80
  6. Step 6: Final answer
    x = 836,531.70

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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.