Home / 498,932.40-688,331.34-307,613.64

Finding the Fourth Proportional to 498,932.40, 688,331.34 and 307,613.64

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Solution

The fourth proportional to 498,932.40, 688,331.34 and 307,613.64 is: 424,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,932.40 : 688,331.34 = 307,613.64 : x
  2. Step 2: Convert to fraction form
    498,932.40/688,331.34 = 307,613.64/x
  3. Step 3: Cross multiply
    498,932.40x = 688,331.34 × 307,613.64
  4. Step 4: Simplify right side
    498,932.40x = 211,740,109,023.48
  5. Step 5: Solve for x
    x = 211,740,109,023.48/498,932.40
  6. Step 6: Final answer
    x = 424,386.37

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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.