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Finding the Fourth Proportional to 1,315,459, 1,815,335.04 and 711,847

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Solution

The fourth proportional to 1,315,459, 1,815,335.04 and 711,847 is: 982,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,459 : 1,815,335.04 = 711,847 : x
  2. Step 2: Convert to fraction form
    1,315,459/1,815,335.04 = 711,847/x
  3. Step 3: Cross multiply
    1,315,459x = 1,815,335.04 × 711,847
  4. Step 4: Simplify right side
    1,315,459x = 1,292,240,802,218.88
  5. Step 5: Solve for x
    x = 1,292,240,802,218.88/1,315,459
  6. Step 6: Final answer
    x = 982,349.74

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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.