Home / 767,938.20-1,059,755.16-428,406.45

Finding the Fourth Proportional to 767,938.20, 1,059,755.16 and 428,406.45

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Solution

The fourth proportional to 767,938.20, 1,059,755.16 and 428,406.45 is: 591,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,938.20 : 1,059,755.16 = 428,406.45 : x
  2. Step 2: Convert to fraction form
    767,938.20/1,059,755.16 = 428,406.45/x
  3. Step 3: Cross multiply
    767,938.20x = 1,059,755.16 × 428,406.45
  4. Step 4: Simplify right side
    767,938.20x = 454,005,945,964.78
  5. Step 5: Solve for x
    x = 454,005,945,964.78/767,938.20
  6. Step 6: Final answer
    x = 591,201.15

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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.