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Finding the Fourth Proportional to 862,937.32, 1,190,854.80 and 480,955.90

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Solution

The fourth proportional to 862,937.32, 1,190,854.80 and 480,955.90 is: 663,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,937.32 : 1,190,854.80 = 480,955.90 : x
  2. Step 2: Convert to fraction form
    862,937.32/1,190,854.80 = 480,955.90/x
  3. Step 3: Cross multiply
    862,937.32x = 1,190,854.80 × 480,955.90
  4. Step 4: Simplify right side
    862,937.32x = 572,748,642,103.32
  5. Step 5: Solve for x
    x = 572,748,642,103.32/862,937.32
  6. Step 6: Final answer
    x = 663,719.87

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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.