Home / 775,128.78-1,069,690.15-426,282.97

Finding the Fourth Proportional to 775,128.78, 1,069,690.15 and 426,282.97

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Solution

The fourth proportional to 775,128.78, 1,069,690.15 and 426,282.97 is: 588,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,128.78 : 1,069,690.15 = 426,282.97 : x
  2. Step 2: Convert to fraction form
    775,128.78/1,069,690.15 = 426,282.97/x
  3. Step 3: Cross multiply
    775,128.78x = 1,069,690.15 × 426,282.97
  4. Step 4: Simplify right side
    775,128.78x = 455,990,693,056.04
  5. Step 5: Solve for x
    x = 455,990,693,056.04/775,128.78
  6. Step 6: Final answer
    x = 588,277.34

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Double scale
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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.