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Finding the Fourth Proportional to 486,012.60, 729,018.90 and 366,262.20

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Solution

The fourth proportional to 486,012.60, 729,018.90 and 366,262.20 is: 549,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,012.60 : 729,018.90 = 366,262.20 : x
  2. Step 2: Convert to fraction form
    486,012.60/729,018.90 = 366,262.20/x
  3. Step 3: Cross multiply
    486,012.60x = 729,018.90 × 366,262.20
  4. Step 4: Simplify right side
    486,012.60x = 267,012,066,155.58
  5. Step 5: Solve for x
    x = 267,012,066,155.58/486,012.60
  6. Step 6: Final answer
    x = 549,393.30

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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.