Home / 1,318,690.38-1,978,070.19-359,154.15

Finding the Fourth Proportional to 1,318,690.38, 1,978,070.19 and 359,154.15

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Solution

The fourth proportional to 1,318,690.38, 1,978,070.19 and 359,154.15 is: 538,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,690.38 : 1,978,070.19 = 359,154.15 : x
  2. Step 2: Convert to fraction form
    1,318,690.38/1,978,070.19 = 359,154.15/x
  3. Step 3: Cross multiply
    1,318,690.38x = 1,978,070.19 × 359,154.15
  4. Step 4: Simplify right side
    1,318,690.38x = 710,432,123,122.21
  5. Step 5: Solve for x
    x = 710,432,123,122.21/1,318,690.38
  6. Step 6: Final answer
    x = 538,740.66

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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.