Home / 638,067.08-880,528.02-351,580.36

Finding the Fourth Proportional to 638,067.08, 880,528.02 and 351,580.36

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Solution

The fourth proportional to 638,067.08, 880,528.02 and 351,580.36 is: 485,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,067.08 : 880,528.02 = 351,580.36 : x
  2. Step 2: Convert to fraction form
    638,067.08/880,528.02 = 351,580.36/x
  3. Step 3: Cross multiply
    638,067.08x = 880,528.02 × 351,580.36
  4. Step 4: Simplify right side
    638,067.08x = 309,576,358,261.69
  5. Step 5: Solve for x
    x = 309,576,358,261.69/638,067.08
  6. Step 6: Final answer
    x = 485,178.39

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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.