Home / 1,008,020.56-1,389,154.40-721,042.40

Finding the Fourth Proportional to 1,008,020.56, 1,389,154.40 and 721,042.40

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Solution

The fourth proportional to 1,008,020.56, 1,389,154.40 and 721,042.40 is: 993,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,020.56 : 1,389,154.40 = 721,042.40 : x
  2. Step 2: Convert to fraction form
    1,008,020.56/1,389,154.40 = 721,042.40/x
  3. Step 3: Cross multiply
    1,008,020.56x = 1,389,154.40 × 721,042.40
  4. Step 4: Simplify right side
    1,008,020.56x = 1,001,639,222,546.56
  5. Step 5: Solve for x
    x = 1,001,639,222,546.56/1,008,020.56
  6. Step 6: Final answer
    x = 993,669.44

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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.