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Finding the Fourth Proportional to 1,581,981.13, 2,373,324.32 and 871,643.53

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Solution

The fourth proportional to 1,581,981.13, 2,373,324.32 and 871,643.53 is: 1,307,659.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,981.13 : 2,373,324.32 = 871,643.53 : x
  2. Step 2: Convert to fraction form
    1,581,981.13/2,373,324.32 = 871,643.53/x
  3. Step 3: Cross multiply
    1,581,981.13x = 2,373,324.32 × 871,643.53
  4. Step 4: Simplify right side
    1,581,981.13x = 2,068,692,788,119.65
  5. Step 5: Solve for x
    x = 2,068,692,788,119.65/1,581,981.13
  6. Step 6: Final answer
    x = 1,307,659.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.