Home / 728,522.38-1,005,360.88-426,716.38

Finding the Fourth Proportional to 728,522.38, 1,005,360.88 and 426,716.38

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Solution

The fourth proportional to 728,522.38, 1,005,360.88 and 426,716.38 is: 588,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,522.38 : 1,005,360.88 = 426,716.38 : x
  2. Step 2: Convert to fraction form
    728,522.38/1,005,360.88 = 426,716.38/x
  3. Step 3: Cross multiply
    728,522.38x = 1,005,360.88 × 426,716.38
  4. Step 4: Simplify right side
    728,522.38x = 429,003,955,307.21
  5. Step 5: Solve for x
    x = 429,003,955,307.21/728,522.38
  6. Step 6: Final answer
    x = 588,868.60

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Half scale
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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.