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Finding the Fourth Proportional to 675,999.40, 1,013,999.10 and 344,223.40

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Solution

The fourth proportional to 675,999.40, 1,013,999.10 and 344,223.40 is: 516,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,999.40 : 1,013,999.10 = 344,223.40 : x
  2. Step 2: Convert to fraction form
    675,999.40/1,013,999.10 = 344,223.40/x
  3. Step 3: Cross multiply
    675,999.40x = 1,013,999.10 × 344,223.40
  4. Step 4: Simplify right side
    675,999.40x = 349,042,217,798.94
  5. Step 5: Solve for x
    x = 349,042,217,798.94/675,999.40
  6. Step 6: Final answer
    x = 516,335.10

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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.