Home / 2,070,874.95-2,858,689.22-1,392,205.11

Finding the Fourth Proportional to 2,070,874.95, 2,858,689.22 and 1,392,205.11

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Solution

The fourth proportional to 2,070,874.95, 2,858,689.22 and 1,392,205.11 is: 1,921,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070,874.95 : 2,858,689.22 = 1,392,205.11 : x
  2. Step 2: Convert to fraction form
    2,070,874.95/2,858,689.22 = 1,392,205.11/x
  3. Step 3: Cross multiply
    2,070,874.95x = 2,858,689.22 × 1,392,205.11
  4. Step 4: Simplify right side
    2,070,874.95x = 3,979,881,739,985.91
  5. Step 5: Solve for x
    x = 3,979,881,739,985.91/2,070,874.95
  6. Step 6: Final answer
    x = 1,921,835.86

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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.