Home / 657,859.78-907,868.46-403,161.76

Finding the Fourth Proportional to 657,859.78, 907,868.46 and 403,161.76

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Solution

The fourth proportional to 657,859.78, 907,868.46 and 403,161.76 is: 556,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,859.78 : 907,868.46 = 403,161.76 : x
  2. Step 2: Convert to fraction form
    657,859.78/907,868.46 = 403,161.76/x
  3. Step 3: Cross multiply
    657,859.78x = 907,868.46 × 403,161.76
  4. Step 4: Simplify right side
    657,859.78x = 366,017,846,182.09
  5. Step 5: Solve for x
    x = 366,017,846,182.09/657,859.78
  6. Step 6: Final answer
    x = 556,376.69

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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.