Home / 1,121,694.40-1,684,291.20-649,302.40

Finding the Fourth Proportional to 1,121,694.40, 1,684,291.20 and 649,302.40

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Solution

The fourth proportional to 1,121,694.40, 1,684,291.20 and 649,302.40 is: 974,966.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,694.40 : 1,684,291.20 = 649,302.40 : x
  2. Step 2: Convert to fraction form
    1,121,694.40/1,684,291.20 = 649,302.40/x
  3. Step 3: Cross multiply
    1,121,694.40x = 1,684,291.20 × 649,302.40
  4. Step 4: Simplify right side
    1,121,694.40x = 1,093,614,318,458.88
  5. Step 5: Solve for x
    x = 1,093,614,318,458.88/1,121,694.40
  6. Step 6: Final answer
    x = 974,966.37

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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.