Home / 638,055.38-880,484.64-351,529.22

Finding the Fourth Proportional to 638,055.38, 880,484.64 and 351,529.22

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Solution

The fourth proportional to 638,055.38, 880,484.64 and 351,529.22 is: 485,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,055.38 : 880,484.64 = 351,529.22 : x
  2. Step 2: Convert to fraction form
    638,055.38/880,484.64 = 351,529.22/x
  3. Step 3: Cross multiply
    638,055.38x = 880,484.64 × 351,529.22
  4. Step 4: Simplify right side
    638,055.38x = 309,516,078,721.18
  5. Step 5: Solve for x
    x = 309,516,078,721.18/638,055.38
  6. Step 6: Final answer
    x = 485,092.81

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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.