Home / 638,055.23-880,555.43-351,575.24

Finding the Fourth Proportional to 638,055.23, 880,555.43 and 351,575.24

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Solution

The fourth proportional to 638,055.23, 880,555.43 and 351,575.24 is: 485,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,055.23 : 880,555.43 = 351,575.24 : x
  2. Step 2: Convert to fraction form
    638,055.23/880,555.43 = 351,575.24/x
  3. Step 3: Cross multiply
    638,055.23x = 880,555.43 × 351,575.24
  4. Step 4: Simplify right side
    638,055.23x = 309,581,486,635.55
  5. Step 5: Solve for x
    x = 309,581,486,635.55/638,055.23
  6. Step 6: Final answer
    x = 485,195.44

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Double scale
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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.