Home / 657,858.78-907,867.08-403,160.76

Finding the Fourth Proportional to 657,858.78, 907,867.08 and 403,160.76

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Solution

The fourth proportional to 657,858.78, 907,867.08 and 403,160.76 is: 556,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,858.78 : 907,867.08 = 403,160.76 : x
  2. Step 2: Convert to fraction form
    657,858.78/907,867.08 = 403,160.76/x
  3. Step 3: Cross multiply
    657,858.78x = 907,867.08 × 403,160.76
  4. Step 4: Simplify right side
    657,858.78x = 366,016,381,951.78
  5. Step 5: Solve for x
    x = 366,016,381,951.78/657,858.78
  6. Step 6: Final answer
    x = 556,375.31

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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.