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Finding the Fourth Proportional to 498,407.88, 687,802.70 and 272,053.38

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Solution

The fourth proportional to 498,407.88, 687,802.70 and 272,053.38 is: 375,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,407.88 : 687,802.70 = 272,053.38 : x
  2. Step 2: Convert to fraction form
    498,407.88/687,802.70 = 272,053.38/x
  3. Step 3: Cross multiply
    498,407.88x = 687,802.70 × 272,053.38
  4. Step 4: Simplify right side
    498,407.88x = 187,119,047,947.86
  5. Step 5: Solve for x
    x = 187,119,047,947.86/498,407.88
  6. Step 6: Final answer
    x = 375,433.57

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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.