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Finding the Fourth Proportional to 526,046.40, 725,850.72 and 311,195.52

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Solution

The fourth proportional to 526,046.40, 725,850.72 and 311,195.52 is: 429,394.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,046.40 : 725,850.72 = 311,195.52 : x
  2. Step 2: Convert to fraction form
    526,046.40/725,850.72 = 311,195.52/x
  3. Step 3: Cross multiply
    526,046.40x = 725,850.72 × 311,195.52
  4. Step 4: Simplify right side
    526,046.40x = 225,881,492,252.77
  5. Step 5: Solve for x
    x = 225,881,492,252.77/526,046.40
  6. Step 6: Final answer
    x = 429,394.62

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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.