Home / 875,115.20-1,312,672.80-869,585.60

Finding the Fourth Proportional to 875,115.20, 1,312,672.80 and 869,585.60

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Solution

The fourth proportional to 875,115.20, 1,312,672.80 and 869,585.60 is: 1,304,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,115.20 : 1,312,672.80 = 869,585.60 : x
  2. Step 2: Convert to fraction form
    875,115.20/1,312,672.80 = 869,585.60/x
  3. Step 3: Cross multiply
    875,115.20x = 1,312,672.80 × 869,585.60
  4. Step 4: Simplify right side
    875,115.20x = 1,141,481,364,391.68
  5. Step 5: Solve for x
    x = 1,141,481,364,391.68/875,115.20
  6. Step 6: Final answer
    x = 1,304,378.40

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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.