Home / 871,394.11-1,307,312.91-511,868.95

Finding the Fourth Proportional to 871,394.11, 1,307,312.91 and 511,868.95

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Solution

The fourth proportional to 871,394.11, 1,307,312.91 and 511,868.95 is: 767,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,394.11 : 1,307,312.91 = 511,868.95 : x
  2. Step 2: Convert to fraction form
    871,394.11/1,307,312.91 = 511,868.95/x
  3. Step 3: Cross multiply
    871,394.11x = 1,307,312.91 × 511,868.95
  4. Step 4: Simplify right side
    871,394.11x = 669,172,883,294.86
  5. Step 5: Solve for x
    x = 669,172,883,294.86/871,394.11
  6. Step 6: Final answer
    x = 767,933.68

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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.