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Finding the Fourth Proportional to 498,779.52, 688,315.72 and 272,425.56

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Solution

The fourth proportional to 498,779.52, 688,315.72 and 272,425.56 is: 375,947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,779.52 : 688,315.72 = 272,425.56 : x
  2. Step 2: Convert to fraction form
    498,779.52/688,315.72 = 272,425.56/x
  3. Step 3: Cross multiply
    498,779.52x = 688,315.72 × 272,425.56
  4. Step 4: Simplify right side
    498,779.52x = 187,514,795,477.80
  5. Step 5: Solve for x
    x = 187,514,795,477.80/498,779.52
  6. Step 6: Final answer
    x = 375,947.26

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1.5x scale

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.