Home / 2,279,712.28-3,145,909.98-1,312,879

Finding the Fourth Proportional to 2,279,712.28, 3,145,909.98 and 1,312,879

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Solution

The fourth proportional to 2,279,712.28, 3,145,909.98 and 1,312,879 is: 1,811,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279,712.28 : 3,145,909.98 = 1,312,879 : x
  2. Step 2: Convert to fraction form
    2,279,712.28/3,145,909.98 = 1,312,879/x
  3. Step 3: Cross multiply
    2,279,712.28x = 3,145,909.98 × 1,312,879
  4. Step 4: Simplify right side
    2,279,712.28x = 4,130,199,148,632.42
  5. Step 5: Solve for x
    x = 4,130,199,148,632.42/2,279,712.28
  6. Step 6: Final answer
    x = 1,811,719.48

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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.