Home / 1,442,164.95-1,990,437.35-869,205.78

Finding the Fourth Proportional to 1,442,164.95, 1,990,437.35 and 869,205.78

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Solution

The fourth proportional to 1,442,164.95, 1,990,437.35 and 869,205.78 is: 1,199,654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,164.95 : 1,990,437.35 = 869,205.78 : x
  2. Step 2: Convert to fraction form
    1,442,164.95/1,990,437.35 = 869,205.78/x
  3. Step 3: Cross multiply
    1,442,164.95x = 1,990,437.35 × 869,205.78
  4. Step 4: Simplify right side
    1,442,164.95x = 1,730,099,649,347.88
  5. Step 5: Solve for x
    x = 1,730,099,649,347.88/1,442,164.95
  6. Step 6: Final answer
    x = 1,199,654.48

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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.