Home / 578,839.40-868,259.10-325,860.20

Finding the Fourth Proportional to 578,839.40, 868,259.10 and 325,860.20

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Solution

The fourth proportional to 578,839.40, 868,259.10 and 325,860.20 is: 488,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,839.40 : 868,259.10 = 325,860.20 : x
  2. Step 2: Convert to fraction form
    578,839.40/868,259.10 = 325,860.20/x
  3. Step 3: Cross multiply
    578,839.40x = 868,259.10 × 325,860.20
  4. Step 4: Simplify right side
    578,839.40x = 282,931,083,977.82
  5. Step 5: Solve for x
    x = 282,931,083,977.82/578,839.40
  6. Step 6: Final answer
    x = 488,790.30

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Half scale
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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.