Home / 408,815.07-563,682.02-279,815.82

Finding the Fourth Proportional to 408,815.07, 563,682.02 and 279,815.82

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Solution

The fourth proportional to 408,815.07, 563,682.02 and 279,815.82 is: 385,815.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,815.07 : 563,682.02 = 279,815.82 : x
  2. Step 2: Convert to fraction form
    408,815.07/563,682.02 = 279,815.82/x
  3. Step 3: Cross multiply
    408,815.07x = 563,682.02 × 279,815.82
  4. Step 4: Simplify right side
    408,815.07x = 157,727,145,246.48
  5. Step 5: Solve for x
    x = 157,727,145,246.48/408,815.07
  6. Step 6: Final answer
    x = 385,815.39

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1.5x scale

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.