Home / 1,390,540.91-1,920,062.48-1,117,734.53

Finding the Fourth Proportional to 1,390,540.91, 1,920,062.48 and 1,117,734.53

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Solution

The fourth proportional to 1,390,540.91, 1,920,062.48 and 1,117,734.53 is: 1,543,370.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,540.91 : 1,920,062.48 = 1,117,734.53 : x
  2. Step 2: Convert to fraction form
    1,390,540.91/1,920,062.48 = 1,117,734.53/x
  3. Step 3: Cross multiply
    1,390,540.91x = 1,920,062.48 × 1,117,734.53
  4. Step 4: Simplify right side
    1,390,540.91x = 2,146,120,118,464.45
  5. Step 5: Solve for x
    x = 2,146,120,118,464.45/1,390,540.91
  6. Step 6: Final answer
    x = 1,543,370.72

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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.