Home / 1,443,084.25-1,991,320.68-976,990.03

Finding the Fourth Proportional to 1,443,084.25, 1,991,320.68 and 976,990.03

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Solution

The fourth proportional to 1,443,084.25, 1,991,320.68 and 976,990.03 is: 1,348,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,084.25 : 1,991,320.68 = 976,990.03 : x
  2. Step 2: Convert to fraction form
    1,443,084.25/1,991,320.68 = 976,990.03/x
  3. Step 3: Cross multiply
    1,443,084.25x = 1,991,320.68 × 976,990.03
  4. Step 4: Simplify right side
    1,443,084.25x = 1,945,500,450,892.82
  5. Step 5: Solve for x
    x = 1,945,500,450,892.82/1,443,084.25
  6. Step 6: Final answer
    x = 1,348,154.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.