Home / 432,029.45-647,987.27-128,417.12

Finding the Fourth Proportional to 432,029.45, 647,987.27 and 128,417.12

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Solution

The fourth proportional to 432,029.45, 647,987.27 and 128,417.12 is: 192,608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,029.45 : 647,987.27 = 128,417.12 : x
  2. Step 2: Convert to fraction form
    432,029.45/647,987.27 = 128,417.12/x
  3. Step 3: Cross multiply
    432,029.45x = 647,987.27 × 128,417.12
  4. Step 4: Simplify right side
    432,029.45x = 83,212,655,128.04
  5. Step 5: Solve for x
    x = 83,212,655,128.04/432,029.45
  6. Step 6: Final answer
    x = 192,608.76

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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.