Home / 1,391,872.31-2,087,809.61-381,002.63

Finding the Fourth Proportional to 1,391,872.31, 2,087,809.61 and 381,002.63

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Solution

The fourth proportional to 1,391,872.31, 2,087,809.61 and 381,002.63 is: 571,504.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,872.31 : 2,087,809.61 = 381,002.63 : x
  2. Step 2: Convert to fraction form
    1,391,872.31/2,087,809.61 = 381,002.63/x
  3. Step 3: Cross multiply
    1,391,872.31x = 2,087,809.61 × 381,002.63
  4. Step 4: Simplify right side
    1,391,872.31x = 795,460,955,663.79
  5. Step 5: Solve for x
    x = 795,460,955,663.79/1,391,872.31
  6. Step 6: Final answer
    x = 571,504.26

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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.