Home / 1,315,549.12-1,815,459.60-711,937.12

Finding the Fourth Proportional to 1,315,549.12, 1,815,459.60 and 711,937.12

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Solution

The fourth proportional to 1,315,549.12, 1,815,459.60 and 711,937.12 is: 982,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,549.12 : 1,815,459.60 = 711,937.12 : x
  2. Step 2: Convert to fraction form
    1,315,549.12/1,815,459.60 = 711,937.12/x
  3. Step 3: Cross multiply
    1,315,549.12x = 1,815,459.60 × 711,937.12
  4. Step 4: Simplify right side
    1,315,549.12x = 1,292,493,079,100.35
  5. Step 5: Solve for x
    x = 1,292,493,079,100.35/1,315,549.12
  6. Step 6: Final answer
    x = 982,474.21

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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.