Home / 785,254.20-1,083,655.98-445,728.12

Finding the Fourth Proportional to 785,254.20, 1,083,655.98 and 445,728.12

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Solution

The fourth proportional to 785,254.20, 1,083,655.98 and 445,728.12 is: 615,107.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,254.20 : 1,083,655.98 = 445,728.12 : x
  2. Step 2: Convert to fraction form
    785,254.20/1,083,655.98 = 445,728.12/x
  3. Step 3: Cross multiply
    785,254.20x = 1,083,655.98 × 445,728.12
  4. Step 4: Simplify right side
    785,254.20x = 483,015,942,692.16
  5. Step 5: Solve for x
    x = 483,015,942,692.16/785,254.20
  6. Step 6: Final answer
    x = 615,107.75

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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.