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Finding the Fourth Proportional to 616,915.20, 925,372.80 and 476,947.20

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Solution

The fourth proportional to 616,915.20, 925,372.80 and 476,947.20 is: 715,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,915.20 : 925,372.80 = 476,947.20 : x
  2. Step 2: Convert to fraction form
    616,915.20/925,372.80 = 476,947.20/x
  3. Step 3: Cross multiply
    616,915.20x = 925,372.80 × 476,947.20
  4. Step 4: Simplify right side
    616,915.20x = 441,353,965,916.16
  5. Step 5: Solve for x
    x = 441,353,965,916.16/616,915.20
  6. Step 6: Final answer
    x = 715,420.80

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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.