Home / 1,378,691.72-1,902,567.29-766,831.31

Finding the Fourth Proportional to 1,378,691.72, 1,902,567.29 and 766,831.31

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Solution

The fourth proportional to 1,378,691.72, 1,902,567.29 and 766,831.31 is: 1,058,212.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,691.72 : 1,902,567.29 = 766,831.31 : x
  2. Step 2: Convert to fraction form
    1,378,691.72/1,902,567.29 = 766,831.31/x
  3. Step 3: Cross multiply
    1,378,691.72x = 1,902,567.29 × 766,831.31
  4. Step 4: Simplify right side
    1,378,691.72x = 1,458,948,167,353.85
  5. Step 5: Solve for x
    x = 1,458,948,167,353.85/1,378,691.72
  6. Step 6: Final answer
    x = 1,058,212.03

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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.