Home / 743,390.68-1,025,891.60-403,859.20

Finding the Fourth Proportional to 743,390.68, 1,025,891.60 and 403,859.20

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Solution

The fourth proportional to 743,390.68, 1,025,891.60 and 403,859.20 is: 557,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,390.68 : 1,025,891.60 = 403,859.20 : x
  2. Step 2: Convert to fraction form
    743,390.68/1,025,891.60 = 403,859.20/x
  3. Step 3: Cross multiply
    743,390.68x = 1,025,891.60 × 403,859.20
  4. Step 4: Simplify right side
    743,390.68x = 414,315,760,862.72
  5. Step 5: Solve for x
    x = 414,315,760,862.72/743,390.68
  6. Step 6: Final answer
    x = 557,332.47

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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.