Home / 765,109.90-1,055,809.38-425,556.28

Finding the Fourth Proportional to 765,109.90, 1,055,809.38 and 425,556.28

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Solution

The fourth proportional to 765,109.90, 1,055,809.38 and 425,556.28 is: 587,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,109.90 : 1,055,809.38 = 425,556.28 : x
  2. Step 2: Convert to fraction form
    765,109.90/1,055,809.38 = 425,556.28/x
  3. Step 3: Cross multiply
    765,109.90x = 1,055,809.38 × 425,556.28
  4. Step 4: Simplify right side
    765,109.90x = 449,306,312,141.91
  5. Step 5: Solve for x
    x = 449,306,312,141.91/765,109.90
  6. Step 6: Final answer
    x = 587,244.15

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1.5x scale

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.