Home / 753,751.28-1,040,340.81-463,612.20

Finding the Fourth Proportional to 753,751.28, 1,040,340.81 and 463,612.20

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Solution

The fourth proportional to 753,751.28, 1,040,340.81 and 463,612.20 is: 639,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,751.28 : 1,040,340.81 = 463,612.20 : x
  2. Step 2: Convert to fraction form
    753,751.28/1,040,340.81 = 463,612.20/x
  3. Step 3: Cross multiply
    753,751.28x = 1,040,340.81 × 463,612.20
  4. Step 4: Simplify right side
    753,751.28x = 482,314,691,673.88
  5. Step 5: Solve for x
    x = 482,314,691,673.88/753,751.28
  6. Step 6: Final answer
    x = 639,885.74

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Double scale
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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.