Home / 1,438,894.89-1,985,711.05-818,665.87

Finding the Fourth Proportional to 1,438,894.89, 1,985,711.05 and 818,665.87

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Solution

The fourth proportional to 1,438,894.89, 1,985,711.05 and 818,665.87 is: 1,129,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,894.89 : 1,985,711.05 = 818,665.87 : x
  2. Step 2: Convert to fraction form
    1,438,894.89/1,985,711.05 = 818,665.87/x
  3. Step 3: Cross multiply
    1,438,894.89x = 1,985,711.05 × 818,665.87
  4. Step 4: Simplify right side
    1,438,894.89x = 1,625,633,864,316.86
  5. Step 5: Solve for x
    x = 1,625,633,864,316.86/1,438,894.89
  6. Step 6: Final answer
    x = 1,129,779.44

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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.