Home / 879,387.20-1,314,933.60-655,438.40

Finding the Fourth Proportional to 879,387.20, 1,314,933.60 and 655,438.40

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Solution

The fourth proportional to 879,387.20, 1,314,933.60 and 655,438.40 is: 980,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,387.20 : 1,314,933.60 = 655,438.40 : x
  2. Step 2: Convert to fraction form
    879,387.20/1,314,933.60 = 655,438.40/x
  3. Step 3: Cross multiply
    879,387.20x = 1,314,933.60 × 655,438.40
  4. Step 4: Simplify right side
    879,387.20x = 861,857,974,890.24
  5. Step 5: Solve for x
    x = 861,857,974,890.24/879,387.20
  6. Step 6: Final answer
    x = 980,066.55

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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.