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Finding the Fourth Proportional to 498,398.73, 687,550.71 and 326,240.85

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Solution

The fourth proportional to 498,398.73, 687,550.71 and 326,240.85 is: 450,055.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,398.73 : 687,550.71 = 326,240.85 : x
  2. Step 2: Convert to fraction form
    498,398.73/687,550.71 = 326,240.85/x
  3. Step 3: Cross multiply
    498,398.73x = 687,550.71 × 326,240.85
  4. Step 4: Simplify right side
    498,398.73x = 224,307,128,048.50
  5. Step 5: Solve for x
    x = 224,307,128,048.50/498,398.73
  6. Step 6: Final answer
    x = 450,055.58

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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.