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Finding the Fourth Proportional to 498,424.61, 687,841.53 and 283,595.60

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Solution

The fourth proportional to 498,424.61, 687,841.53 and 283,595.60 is: 391,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,424.61 : 687,841.53 = 283,595.60 : x
  2. Step 2: Convert to fraction form
    498,424.61/687,841.53 = 283,595.60/x
  3. Step 3: Cross multiply
    498,424.61x = 687,841.53 × 283,595.60
  4. Step 4: Simplify right side
    498,424.61x = 195,068,831,405.27
  5. Step 5: Solve for x
    x = 195,068,831,405.27/498,424.61
  6. Step 6: Final answer
    x = 391,370.79

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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.