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Finding the Fourth Proportional to 672,695.20, 928,314.80 and 370,889.20

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Solution

The fourth proportional to 672,695.20, 928,314.80 and 370,889.20 is: 511,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,695.20 : 928,314.80 = 370,889.20 : x
  2. Step 2: Convert to fraction form
    672,695.20/928,314.80 = 370,889.20/x
  3. Step 3: Cross multiply
    672,695.20x = 928,314.80 × 370,889.20
  4. Step 4: Simplify right side
    672,695.20x = 344,301,933,520.16
  5. Step 5: Solve for x
    x = 344,301,933,520.16/672,695.20
  6. Step 6: Final answer
    x = 511,824.57

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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.