Home / 747,745.40-1,121,618.10-481,806.20

Finding the Fourth Proportional to 747,745.40, 1,121,618.10 and 481,806.20

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Solution

The fourth proportional to 747,745.40, 1,121,618.10 and 481,806.20 is: 722,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,745.40 : 1,121,618.10 = 481,806.20 : x
  2. Step 2: Convert to fraction form
    747,745.40/1,121,618.10 = 481,806.20/x
  3. Step 3: Cross multiply
    747,745.40x = 1,121,618.10 × 481,806.20
  4. Step 4: Simplify right side
    747,745.40x = 540,402,554,612.22
  5. Step 5: Solve for x
    x = 540,402,554,612.22/747,745.40
  6. Step 6: Final answer
    x = 722,709.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.