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Finding the Fourth Proportional to 587,145.60, 880,718.40 and 398,188.80

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Solution

The fourth proportional to 587,145.60, 880,718.40 and 398,188.80 is: 597,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,145.60 : 880,718.40 = 398,188.80 : x
  2. Step 2: Convert to fraction form
    587,145.60/880,718.40 = 398,188.80/x
  3. Step 3: Cross multiply
    587,145.60x = 880,718.40 × 398,188.80
  4. Step 4: Simplify right side
    587,145.60x = 350,692,202,833.92
  5. Step 5: Solve for x
    x = 350,692,202,833.92/587,145.60
  6. Step 6: Final answer
    x = 597,283.20

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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.