Home / 2,657,212.80-3,986,402.40-859,790.40

Finding the Fourth Proportional to 2,657,212.80, 3,986,402.40 and 859,790.40

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Solution

The fourth proportional to 2,657,212.80, 3,986,402.40 and 859,790.40 is: 1,289,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657,212.80 : 3,986,402.40 = 859,790.40 : x
  2. Step 2: Convert to fraction form
    2,657,212.80/3,986,402.40 = 859,790.40/x
  3. Step 3: Cross multiply
    2,657,212.80x = 3,986,402.40 × 859,790.40
  4. Step 4: Simplify right side
    2,657,212.80x = 3,427,470,514,056.96
  5. Step 5: Solve for x
    x = 3,427,470,514,056.96/2,657,212.80
  6. Step 6: Final answer
    x = 1,289,874.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.