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Finding the Fourth Proportional to 498,063.34, 687,324.19 and 283,203.39

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Solution

The fourth proportional to 498,063.34, 687,324.19 and 283,203.39 is: 390,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,063.34 : 687,324.19 = 283,203.39 : x
  2. Step 2: Convert to fraction form
    498,063.34/687,324.19 = 283,203.39/x
  3. Step 3: Cross multiply
    498,063.34x = 687,324.19 × 283,203.39
  4. Step 4: Simplify right side
    498,063.34x = 194,652,539,967.78
  5. Step 5: Solve for x
    x = 194,652,539,967.78/498,063.34
  6. Step 6: Final answer
    x = 390,818.85

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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.