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Finding the Fourth Proportional to 580,915.20, 781,747.20 and 580,915.20

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Solution

The fourth proportional to 580,915.20, 781,747.20 and 580,915.20 is: 781,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,915.20 : 781,747.20 = 580,915.20 : x
  2. Step 2: Convert to fraction form
    580,915.20/781,747.20 = 580,915.20/x
  3. Step 3: Cross multiply
    580,915.20x = 781,747.20 × 580,915.20
  4. Step 4: Simplify right side
    580,915.20x = 454,128,831,037.44
  5. Step 5: Solve for x
    x = 454,128,831,037.44/580,915.20
  6. Step 6: Final answer
    x = 781,747.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.