Home / 871,390.71-1,307,307.83-511,865.60

Finding the Fourth Proportional to 871,390.71, 1,307,307.83 and 511,865.60

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Solution

The fourth proportional to 871,390.71, 1,307,307.83 and 511,865.60 is: 767,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,390.71 : 1,307,307.83 = 511,865.60 : x
  2. Step 2: Convert to fraction form
    871,390.71/1,307,307.83 = 511,865.60/x
  3. Step 3: Cross multiply
    871,390.71x = 1,307,307.83 × 511,865.60
  4. Step 4: Simplify right side
    871,390.71x = 669,165,897,691.78
  5. Step 5: Solve for x
    x = 669,165,897,691.78/871,390.71
  6. Step 6: Final answer
    x = 767,928.66

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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.