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Finding the Fourth Proportional to 688,702.49, 950,676.76 and 517,115.94

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Solution

The fourth proportional to 688,702.49, 950,676.76 and 517,115.94 is: 713,820.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,702.49 : 950,676.76 = 517,115.94 : x
  2. Step 2: Convert to fraction form
    688,702.49/950,676.76 = 517,115.94/x
  3. Step 3: Cross multiply
    688,702.49x = 950,676.76 × 517,115.94
  4. Step 4: Simplify right side
    688,702.49x = 491,610,101,421.28
  5. Step 5: Solve for x
    x = 491,610,101,421.28/688,702.49
  6. Step 6: Final answer
    x = 713,820.71

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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.