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Finding the Fourth Proportional to 1,315,572.82, 1,815,490.51 and 711,960.82

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Solution

The fourth proportional to 1,315,572.82, 1,815,490.51 and 711,960.82 is: 982,505.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,572.82 : 1,815,490.51 = 711,960.82 : x
  2. Step 2: Convert to fraction form
    1,315,572.82/1,815,490.51 = 711,960.82/x
  3. Step 3: Cross multiply
    1,315,572.82x = 1,815,490.51 × 711,960.82
  4. Step 4: Simplify right side
    1,315,572.82x = 1,292,558,112,691.28
  5. Step 5: Solve for x
    x = 1,292,558,112,691.28/1,315,572.82
  6. Step 6: Final answer
    x = 982,505.94

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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.