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Finding the Fourth Proportional to 579,129.20, 867,138.60 and 579,129.20

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Solution

The fourth proportional to 579,129.20, 867,138.60 and 579,129.20 is: 867,138.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,129.20 : 867,138.60 = 579,129.20 : x
  2. Step 2: Convert to fraction form
    579,129.20/867,138.60 = 579,129.20/x
  3. Step 3: Cross multiply
    579,129.20x = 867,138.60 × 579,129.20
  4. Step 4: Simplify right side
    579,129.20x = 502,185,283,707.12
  5. Step 5: Solve for x
    x = 502,185,283,707.12/579,129.20
  6. Step 6: Final answer
    x = 867,138.60

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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.