Home / 785,331.22-1,083,728.38-479,918.80

Finding the Fourth Proportional to 785,331.22, 1,083,728.38 and 479,918.80

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Solution

The fourth proportional to 785,331.22, 1,083,728.38 and 479,918.80 is: 662,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,331.22 : 1,083,728.38 = 479,918.80 : x
  2. Step 2: Convert to fraction form
    785,331.22/1,083,728.38 = 479,918.80/x
  3. Step 3: Cross multiply
    785,331.22x = 1,083,728.38 × 479,918.80
  4. Step 4: Simplify right side
    785,331.22x = 520,101,623,655.54
  5. Step 5: Solve for x
    x = 520,101,623,655.54/785,331.22
  6. Step 6: Final answer
    x = 662,270.40

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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.