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Finding the Fourth Proportional to 870,758.74, 1,306,642.56 and 365,275

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Solution

The fourth proportional to 870,758.74, 1,306,642.56 and 365,275 is: 548,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,758.74 : 1,306,642.56 = 365,275 : x
  2. Step 2: Convert to fraction form
    870,758.74/1,306,642.56 = 365,275/x
  3. Step 3: Cross multiply
    870,758.74x = 1,306,642.56 × 365,275
  4. Step 4: Simplify right side
    870,758.74x = 477,283,861,104
  5. Step 5: Solve for x
    x = 477,283,861,104/870,758.74
  6. Step 6: Final answer
    x = 548,124.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.