Home / 1,279,726.46-1,919,691.75-438,285.50

Finding the Fourth Proportional to 1,279,726.46, 1,919,691.75 and 438,285.50

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Solution

The fourth proportional to 1,279,726.46, 1,919,691.75 and 438,285.50 is: 657,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,726.46 : 1,919,691.75 = 438,285.50 : x
  2. Step 2: Convert to fraction form
    1,279,726.46/1,919,691.75 = 438,285.50/x
  3. Step 3: Cross multiply
    1,279,726.46x = 1,919,691.75 × 438,285.50
  4. Step 4: Simplify right side
    1,279,726.46x = 841,373,058,494.63
  5. Step 5: Solve for x
    x = 841,373,058,494.63/1,279,726.46
  6. Step 6: Final answer
    x = 657,463.20

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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.