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Finding the Fourth Proportional to 876,098.40, 1,313,888.40 and 343,312.80

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Solution

The fourth proportional to 876,098.40, 1,313,888.40 and 343,312.80 is: 514,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,098.40 : 1,313,888.40 = 343,312.80 : x
  2. Step 2: Convert to fraction form
    876,098.40/1,313,888.40 = 343,312.80/x
  3. Step 3: Cross multiply
    876,098.40x = 1,313,888.40 × 343,312.80
  4. Step 4: Simplify right side
    876,098.40x = 451,074,705,491.52
  5. Step 5: Solve for x
    x = 451,074,705,491.52/876,098.40
  6. Step 6: Final answer
    x = 514,867.63

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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.