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Finding the Fourth Proportional to 498,170.61, 687,490.61 and 283,341.60

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Solution

The fourth proportional to 498,170.61, 687,490.61 and 283,341.60 is: 391,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,170.61 : 687,490.61 = 283,341.60 : x
  2. Step 2: Convert to fraction form
    498,170.61/687,490.61 = 283,341.60/x
  3. Step 3: Cross multiply
    498,170.61x = 687,490.61 × 283,341.60
  4. Step 4: Simplify right side
    498,170.61x = 194,794,688,005.67
  5. Step 5: Solve for x
    x = 194,794,688,005.67/498,170.61
  6. Step 6: Final answer
    x = 391,020.03

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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.