Home / 1,485,405.30-2,049,865.48-840,949.86

Finding the Fourth Proportional to 1,485,405.30, 2,049,865.48 and 840,949.86

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Solution

The fourth proportional to 1,485,405.30, 2,049,865.48 and 840,949.86 is: 1,160,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485,405.30 : 2,049,865.48 = 840,949.86 : x
  2. Step 2: Convert to fraction form
    1,485,405.30/2,049,865.48 = 840,949.86/x
  3. Step 3: Cross multiply
    1,485,405.30x = 2,049,865.48 × 840,949.86
  4. Step 4: Simplify right side
    1,485,405.30x = 1,723,834,088,424.83
  5. Step 5: Solve for x
    x = 1,723,834,088,424.83/1,485,405.30
  6. Step 6: Final answer
    x = 1,160,514.30

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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.