Home / 718,317.11-991,322.15-396,026.62

Finding the Fourth Proportional to 718,317.11, 991,322.15 and 396,026.62

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Solution

The fourth proportional to 718,317.11, 991,322.15 and 396,026.62 is: 546,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,317.11 : 991,322.15 = 396,026.62 : x
  2. Step 2: Convert to fraction form
    718,317.11/991,322.15 = 396,026.62/x
  3. Step 3: Cross multiply
    718,317.11x = 991,322.15 × 396,026.62
  4. Step 4: Simplify right side
    718,317.11x = 392,589,955,937.20
  5. Step 5: Solve for x
    x = 392,589,955,937.20/718,317.11
  6. Step 6: Final answer
    x = 546,541.28

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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.