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Finding the Fourth Proportional to 498,088.76, 687,359.28 and 283,228.82

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Solution

The fourth proportional to 498,088.76, 687,359.28 and 283,228.82 is: 390,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,088.76 : 687,359.28 = 283,228.82 : x
  2. Step 2: Convert to fraction form
    498,088.76/687,359.28 = 283,228.82/x
  3. Step 3: Cross multiply
    498,088.76x = 687,359.28 × 283,228.82
  4. Step 4: Simplify right side
    498,088.76x = 194,679,957,790.45
  5. Step 5: Solve for x
    x = 194,679,957,790.45/498,088.76
  6. Step 6: Final answer
    x = 390,853.95

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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.