Home / 871,387.20-1,307,302.57-511,862.07

Finding the Fourth Proportional to 871,387.20, 1,307,302.57 and 511,862.07

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Solution

The fourth proportional to 871,387.20, 1,307,302.57 and 511,862.07 is: 767,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,387.20 : 1,307,302.57 = 511,862.07 : x
  2. Step 2: Convert to fraction form
    871,387.20/1,307,302.57 = 511,862.07/x
  3. Step 3: Cross multiply
    871,387.20x = 1,307,302.57 × 511,862.07
  4. Step 4: Simplify right side
    871,387.20x = 669,158,599,596.52
  5. Step 5: Solve for x
    x = 669,158,599,596.52/871,387.20
  6. Step 6: Final answer
    x = 767,923.38

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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.