Home / 638,278.02-880,760.59-380,103.62

Finding the Fourth Proportional to 638,278.02, 880,760.59 and 380,103.62

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Solution

The fourth proportional to 638,278.02, 880,760.59 and 380,103.62 is: 524,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,278.02 : 880,760.59 = 380,103.62 : x
  2. Step 2: Convert to fraction form
    638,278.02/880,760.59 = 380,103.62/x
  3. Step 3: Cross multiply
    638,278.02x = 880,760.59 × 380,103.62
  4. Step 4: Simplify right side
    638,278.02x = 334,780,283,258.27
  5. Step 5: Solve for x
    x = 334,780,283,258.27/638,278.02
  6. Step 6: Final answer
    x = 524,505.42

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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.