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Finding the Fourth Proportional to 498,063.60, 687,386.70 and 283,235.94

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Solution

The fourth proportional to 498,063.60, 687,386.70 and 283,235.94 is: 390,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,063.60 : 687,386.70 = 283,235.94 : x
  2. Step 2: Convert to fraction form
    498,063.60/687,386.70 = 283,235.94/x
  3. Step 3: Cross multiply
    498,063.60x = 687,386.70 × 283,235.94
  4. Step 4: Simplify right side
    498,063.60x = 194,692,618,118.00
  5. Step 5: Solve for x
    x = 194,692,618,118.00/498,063.60
  6. Step 6: Final answer
    x = 390,899.11

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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.