Home / 1,318,691.38-1,978,071.69-359,155.15

Finding the Fourth Proportional to 1,318,691.38, 1,978,071.69 and 359,155.15

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Solution

The fourth proportional to 1,318,691.38, 1,978,071.69 and 359,155.15 is: 538,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,691.38 : 1,978,071.69 = 359,155.15 : x
  2. Step 2: Convert to fraction form
    1,318,691.38/1,978,071.69 = 359,155.15/x
  3. Step 3: Cross multiply
    1,318,691.38x = 1,978,071.69 × 359,155.15
  4. Step 4: Simplify right side
    1,318,691.38x = 710,434,634,532.70
  5. Step 5: Solve for x
    x = 710,434,634,532.70/1,318,691.38
  6. Step 6: Final answer
    x = 538,742.15

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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.