Home / 687,592.80-1,031,680.80-435,067.20

Finding the Fourth Proportional to 687,592.80, 1,031,680.80 and 435,067.20

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Solution

The fourth proportional to 687,592.80, 1,031,680.80 and 435,067.20 is: 652,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,592.80 : 1,031,680.80 = 435,067.20 : x
  2. Step 2: Convert to fraction form
    687,592.80/1,031,680.80 = 435,067.20/x
  3. Step 3: Cross multiply
    687,592.80x = 1,031,680.80 × 435,067.20
  4. Step 4: Simplify right side
    687,592.80x = 448,850,476,949.76
  5. Step 5: Solve for x
    x = 448,850,476,949.76/687,592.80
  6. Step 6: Final answer
    x = 652,785.31

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1.5x scale

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.