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Finding the Fourth Proportional to 675,712.80, 1,013,569.20 and 652,093.20

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Solution

The fourth proportional to 675,712.80, 1,013,569.20 and 652,093.20 is: 978,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,712.80 : 1,013,569.20 = 652,093.20 : x
  2. Step 2: Convert to fraction form
    675,712.80/1,013,569.20 = 652,093.20/x
  3. Step 3: Cross multiply
    675,712.80x = 1,013,569.20 × 652,093.20
  4. Step 4: Simplify right side
    675,712.80x = 660,941,583,049.44
  5. Step 5: Solve for x
    x = 660,941,583,049.44/675,712.80
  6. Step 6: Final answer
    x = 978,139.80

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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.