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Finding the Fourth Proportional to 498,939.60, 748,409.40 and 288,987.60

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Solution

The fourth proportional to 498,939.60, 748,409.40 and 288,987.60 is: 433,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,939.60 : 748,409.40 = 288,987.60 : x
  2. Step 2: Convert to fraction form
    498,939.60/748,409.40 = 288,987.60/x
  3. Step 3: Cross multiply
    498,939.60x = 748,409.40 × 288,987.60
  4. Step 4: Simplify right side
    498,939.60x = 216,281,036,323.44
  5. Step 5: Solve for x
    x = 216,281,036,323.44/498,939.60
  6. Step 6: Final answer
    x = 433,481.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.