Home / 454,021.20-681,031.80-288,542.80

Finding the Fourth Proportional to 454,021.20, 681,031.80 and 288,542.80

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Solution

The fourth proportional to 454,021.20, 681,031.80 and 288,542.80 is: 432,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,021.20 : 681,031.80 = 288,542.80 : x
  2. Step 2: Convert to fraction form
    454,021.20/681,031.80 = 288,542.80/x
  3. Step 3: Cross multiply
    454,021.20x = 681,031.80 × 288,542.80
  4. Step 4: Simplify right side
    454,021.20x = 196,506,822,461.04
  5. Step 5: Solve for x
    x = 196,506,822,461.04/454,021.20
  6. Step 6: Final answer
    x = 432,814.20

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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.