Home / 772,581.85-1,066,175.90-428,432.29

Finding the Fourth Proportional to 772,581.85, 1,066,175.90 and 428,432.29

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Solution

The fourth proportional to 772,581.85, 1,066,175.90 and 428,432.29 is: 591,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,581.85 : 1,066,175.90 = 428,432.29 : x
  2. Step 2: Convert to fraction form
    772,581.85/1,066,175.90 = 428,432.29/x
  3. Step 3: Cross multiply
    772,581.85x = 1,066,175.90 × 428,432.29
  4. Step 4: Simplify right side
    772,581.85x = 456,784,179,178.83
  5. Step 5: Solve for x
    x = 456,784,179,178.83/772,581.85
  6. Step 6: Final answer
    x = 591,243.74

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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.