Home / 1,098,568.70-1,647,853.05-921,421.70

Finding the Fourth Proportional to 1,098,568.70, 1,647,853.05 and 921,421.70

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Solution

The fourth proportional to 1,098,568.70, 1,647,853.05 and 921,421.70 is: 1,382,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,568.70 : 1,647,853.05 = 921,421.70 : x
  2. Step 2: Convert to fraction form
    1,098,568.70/1,647,853.05 = 921,421.70/x
  3. Step 3: Cross multiply
    1,098,568.70x = 1,647,853.05 × 921,421.70
  4. Step 4: Simplify right side
    1,098,568.70x = 1,518,367,558,681.19
  5. Step 5: Solve for x
    x = 1,518,367,558,681.19/1,098,568.70
  6. Step 6: Final answer
    x = 1,382,132.55

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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.