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Finding the Fourth Proportional to 1,315,452, 1,815,325.38 and 711,840

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Solution

The fourth proportional to 1,315,452, 1,815,325.38 and 711,840 is: 982,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,452 : 1,815,325.38 = 711,840 : x
  2. Step 2: Convert to fraction form
    1,315,452/1,815,325.38 = 711,840/x
  3. Step 3: Cross multiply
    1,315,452x = 1,815,325.38 × 711,840
  4. Step 4: Simplify right side
    1,315,452x = 1,292,221,218,499.20
  5. Step 5: Solve for x
    x = 1,292,221,218,499.20/1,315,452
  6. Step 6: Final answer
    x = 982,340.08

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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.