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Finding the Fourth Proportional to 572,079.88, 789,382.50 and 342,583.48

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Solution

The fourth proportional to 572,079.88, 789,382.50 and 342,583.48 is: 472,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,079.88 : 789,382.50 = 342,583.48 : x
  2. Step 2: Convert to fraction form
    572,079.88/789,382.50 = 342,583.48/x
  3. Step 3: Cross multiply
    572,079.88x = 789,382.50 × 342,583.48
  4. Step 4: Simplify right side
    572,079.88x = 270,429,403,901.10
  5. Step 5: Solve for x
    x = 270,429,403,901.10/572,079.88
  6. Step 6: Final answer
    x = 472,712.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.