Home / 498,979.20-688,685.76-297,886.08

Finding the Fourth Proportional to 498,979.20, 688,685.76 and 297,886.08

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Solution

The fourth proportional to 498,979.20, 688,685.76 and 297,886.08 is: 411,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,979.20 : 688,685.76 = 297,886.08 : x
  2. Step 2: Convert to fraction form
    498,979.20/688,685.76 = 297,886.08/x
  3. Step 3: Cross multiply
    498,979.20x = 688,685.76 × 297,886.08
  4. Step 4: Simplify right side
    498,979.20x = 205,149,901,398.22
  5. Step 5: Solve for x
    x = 205,149,901,398.22/498,979.20
  6. Step 6: Final answer
    x = 411,139.18

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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.