Home / 638,426.10-881,022.24-351,946.19

Finding the Fourth Proportional to 638,426.10, 881,022.24 and 351,946.19

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Solution

The fourth proportional to 638,426.10, 881,022.24 and 351,946.19 is: 485,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,426.10 : 881,022.24 = 351,946.19 : x
  2. Step 2: Convert to fraction form
    638,426.10/881,022.24 = 351,946.19/x
  3. Step 3: Cross multiply
    638,426.10x = 881,022.24 × 351,946.19
  4. Step 4: Simplify right side
    638,426.10x = 310,072,420,673.27
  5. Step 5: Solve for x
    x = 310,072,420,673.27/638,426.10
  6. Step 6: Final answer
    x = 485,682.56

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Half scale
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Double scale
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Similar ratio
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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.