Home / 638,391.22-880,986.02-351,921.56

Finding the Fourth Proportional to 638,391.22, 880,986.02 and 351,921.56

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Solution

The fourth proportional to 638,391.22, 880,986.02 and 351,921.56 is: 485,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,391.22 : 880,986.02 = 351,921.56 : x
  2. Step 2: Convert to fraction form
    638,391.22/880,986.02 = 351,921.56/x
  3. Step 3: Cross multiply
    638,391.22x = 880,986.02 × 351,921.56
  4. Step 4: Simplify right side
    638,391.22x = 310,037,975,267.16
  5. Step 5: Solve for x
    x = 310,037,975,267.16/638,391.22
  6. Step 6: Final answer
    x = 485,655.13

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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.