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Finding the Fourth Proportional to 587,277.20, 880,915.80 and 398,320.40

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Solution

The fourth proportional to 587,277.20, 880,915.80 and 398,320.40 is: 597,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,277.20 : 880,915.80 = 398,320.40 : x
  2. Step 2: Convert to fraction form
    587,277.20/880,915.80 = 398,320.40/x
  3. Step 3: Cross multiply
    587,277.20x = 880,915.80 × 398,320.40
  4. Step 4: Simplify right side
    587,277.20x = 350,886,733,822.32
  5. Step 5: Solve for x
    x = 350,886,733,822.32/587,277.20
  6. Step 6: Final answer
    x = 597,480.60

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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.