Home / 815,609.61-1,125,855.16-543,578.24

Finding the Fourth Proportional to 815,609.61, 1,125,855.16 and 543,578.24

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Solution

The fourth proportional to 815,609.61, 1,125,855.16 and 543,578.24 is: 750,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,609.61 : 1,125,855.16 = 543,578.24 : x
  2. Step 2: Convert to fraction form
    815,609.61/1,125,855.16 = 543,578.24/x
  3. Step 3: Cross multiply
    815,609.61x = 1,125,855.16 × 543,578.24
  4. Step 4: Simplify right side
    815,609.61x = 611,990,367,823.41
  5. Step 5: Solve for x
    x = 611,990,367,823.41/815,609.61
  6. Step 6: Final answer
    x = 750,347.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.