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Finding the Fourth Proportional to 386,316.30, 579,474.45 and 366,633.30

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Solution

The fourth proportional to 386,316.30, 579,474.45 and 366,633.30 is: 549,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,316.30 : 579,474.45 = 366,633.30 : x
  2. Step 2: Convert to fraction form
    386,316.30/579,474.45 = 366,633.30/x
  3. Step 3: Cross multiply
    386,316.30x = 579,474.45 × 366,633.30
  4. Step 4: Simplify right side
    386,316.30x = 212,454,629,869.19
  5. Step 5: Solve for x
    x = 212,454,629,869.19/386,316.30
  6. Step 6: Final answer
    x = 549,949.95

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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.