Home / 1,278,897.48-1,917,930.88-425,739.96

Finding the Fourth Proportional to 1,278,897.48, 1,917,930.88 and 425,739.96

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Solution

The fourth proportional to 1,278,897.48, 1,917,930.88 and 425,739.96 is: 638,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,897.48 : 1,917,930.88 = 425,739.96 : x
  2. Step 2: Convert to fraction form
    1,278,897.48/1,917,930.88 = 425,739.96/x
  3. Step 3: Cross multiply
    1,278,897.48x = 1,917,930.88 × 425,739.96
  4. Step 4: Simplify right side
    1,278,897.48x = 816,539,816,133.97
  5. Step 5: Solve for x
    x = 816,539,816,133.97/1,278,897.48
  6. Step 6: Final answer
    x = 638,471.67

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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.