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Finding the Fourth Proportional to 575,459.80, 863,189.70 and 486,886.30

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Solution

The fourth proportional to 575,459.80, 863,189.70 and 486,886.30 is: 730,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,459.80 : 863,189.70 = 486,886.30 : x
  2. Step 2: Convert to fraction form
    575,459.80/863,189.70 = 486,886.30/x
  3. Step 3: Cross multiply
    575,459.80x = 863,189.70 × 486,886.30
  4. Step 4: Simplify right side
    575,459.80x = 420,275,239,231.11
  5. Step 5: Solve for x
    x = 420,275,239,231.11/575,459.80
  6. Step 6: Final answer
    x = 730,329.45

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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.