Home / 497,013.98-685,681.91-287,423.13

Finding the Fourth Proportional to 497,013.98, 685,681.91 and 287,423.13

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Solution

The fourth proportional to 497,013.98, 685,681.91 and 287,423.13 is: 396,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,013.98 : 685,681.91 = 287,423.13 : x
  2. Step 2: Convert to fraction form
    497,013.98/685,681.91 = 287,423.13/x
  3. Step 3: Cross multiply
    497,013.98x = 685,681.91 × 287,423.13
  4. Step 4: Simplify right side
    497,013.98x = 197,080,842,968.61
  5. Step 5: Solve for x
    x = 197,080,842,968.61/497,013.98
  6. Step 6: Final answer
    x = 396,529.78

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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.