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Finding the Fourth Proportional to 672,722.56, 928,353.36 and 370,916.80

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Solution

The fourth proportional to 672,722.56, 928,353.36 and 370,916.80 is: 511,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,722.56 : 928,353.36 = 370,916.80 : x
  2. Step 2: Convert to fraction form
    672,722.56/928,353.36 = 370,916.80/x
  3. Step 3: Cross multiply
    672,722.56x = 928,353.36 × 370,916.80
  4. Step 4: Simplify right side
    672,722.56x = 344,341,857,560.45
  5. Step 5: Solve for x
    x = 344,341,857,560.45/672,722.56
  6. Step 6: Final answer
    x = 511,863.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.