Home / 1,358,990.96-2,038,486.90-399,446.78

Finding the Fourth Proportional to 1,358,990.96, 2,038,486.90 and 399,446.78

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Solution

The fourth proportional to 1,358,990.96, 2,038,486.90 and 399,446.78 is: 599,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,990.96 : 2,038,486.90 = 399,446.78 : x
  2. Step 2: Convert to fraction form
    1,358,990.96/2,038,486.90 = 399,446.78/x
  3. Step 3: Cross multiply
    1,358,990.96x = 2,038,486.90 × 399,446.78
  4. Step 4: Simplify right side
    1,358,990.96x = 814,267,028,277.18
  5. Step 5: Solve for x
    x = 814,267,028,277.18/1,358,990.96
  6. Step 6: Final answer
    x = 599,170.31

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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.