Home / 1,390,876.40-1,917,524.76-1,189,094.96

Finding the Fourth Proportional to 1,390,876.40, 1,917,524.76 and 1,189,094.96

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Solution

The fourth proportional to 1,390,876.40, 1,917,524.76 and 1,189,094.96 is: 1,639,339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,876.40 : 1,917,524.76 = 1,189,094.96 : x
  2. Step 2: Convert to fraction form
    1,390,876.40/1,917,524.76 = 1,189,094.96/x
  3. Step 3: Cross multiply
    1,390,876.40x = 1,917,524.76 × 1,189,094.96
  4. Step 4: Simplify right side
    1,390,876.40x = 2,280,119,027,791.21
  5. Step 5: Solve for x
    x = 2,280,119,027,791.21/1,390,876.40
  6. Step 6: Final answer
    x = 1,639,339.79

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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.