Home / 432,030.45-647,988.76-128,418.12

Finding the Fourth Proportional to 432,030.45, 647,988.76 and 128,418.12

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Solution

The fourth proportional to 432,030.45, 647,988.76 and 128,418.12 is: 192,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,030.45 : 647,988.76 = 128,418.12 : x
  2. Step 2: Convert to fraction form
    432,030.45/647,988.76 = 128,418.12/x
  3. Step 3: Cross multiply
    432,030.45x = 647,988.76 × 128,418.12
  4. Step 4: Simplify right side
    432,030.45x = 83,213,498,340.33
  5. Step 5: Solve for x
    x = 83,213,498,340.33/432,030.45
  6. Step 6: Final answer
    x = 192,610.26

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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.