Home / 674,006.40-1,010,318.40-393,379.20

Finding the Fourth Proportional to 674,006.40, 1,010,318.40 and 393,379.20

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Solution

The fourth proportional to 674,006.40, 1,010,318.40 and 393,379.20 is: 589,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,006.40 : 1,010,318.40 = 393,379.20 : x
  2. Step 2: Convert to fraction form
    674,006.40/1,010,318.40 = 393,379.20/x
  3. Step 3: Cross multiply
    674,006.40x = 1,010,318.40 × 393,379.20
  4. Step 4: Simplify right side
    674,006.40x = 397,438,243,937.28
  5. Step 5: Solve for x
    x = 397,438,243,937.28/674,006.40
  6. Step 6: Final answer
    x = 589,665.39

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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.