Home / 803,407.65-1,108,682.88-449,784.15

Finding the Fourth Proportional to 803,407.65, 1,108,682.88 and 449,784.15

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Solution

The fourth proportional to 803,407.65, 1,108,682.88 and 449,784.15 is: 620,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,407.65 : 1,108,682.88 = 449,784.15 : x
  2. Step 2: Convert to fraction form
    803,407.65/1,108,682.88 = 449,784.15/x
  3. Step 3: Cross multiply
    803,407.65x = 1,108,682.88 × 449,784.15
  4. Step 4: Simplify right side
    803,407.65x = 498,667,986,800.35
  5. Step 5: Solve for x
    x = 498,667,986,800.35/803,407.65
  6. Step 6: Final answer
    x = 620,691.11

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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.