Home / 871,060.12-1,307,017.79-391,626.21

Finding the Fourth Proportional to 871,060.12, 1,307,017.79 and 391,626.21

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Solution

The fourth proportional to 871,060.12, 1,307,017.79 and 391,626.21 is: 587,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,060.12 : 1,307,017.79 = 391,626.21 : x
  2. Step 2: Convert to fraction form
    871,060.12/1,307,017.79 = 391,626.21/x
  3. Step 3: Cross multiply
    871,060.12x = 1,307,017.79 × 391,626.21
  4. Step 4: Simplify right side
    871,060.12x = 511,862,423,010.74
  5. Step 5: Solve for x
    x = 511,862,423,010.74/871,060.12
  6. Step 6: Final answer
    x = 587,631.57

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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.