Home / 815,479.47-1,125,375.59-447,972.11

Finding the Fourth Proportional to 815,479.47, 1,125,375.59 and 447,972.11

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Solution

The fourth proportional to 815,479.47, 1,125,375.59 and 447,972.11 is: 618,209.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,479.47 : 1,125,375.59 = 447,972.11 : x
  2. Step 2: Convert to fraction form
    815,479.47/1,125,375.59 = 447,972.11/x
  3. Step 3: Cross multiply
    815,479.47x = 1,125,375.59 × 447,972.11
  4. Step 4: Simplify right side
    815,479.47x = 504,136,877,594.80
  5. Step 5: Solve for x
    x = 504,136,877,594.80/815,479.47
  6. Step 6: Final answer
    x = 618,209.16

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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.