Home / 678,146.60-935,889.08-448,305.29

Finding the Fourth Proportional to 678,146.60, 935,889.08 and 448,305.29

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Solution

The fourth proportional to 678,146.60, 935,889.08 and 448,305.29 is: 618,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,146.60 : 935,889.08 = 448,305.29 : x
  2. Step 2: Convert to fraction form
    678,146.60/935,889.08 = 448,305.29/x
  3. Step 3: Cross multiply
    678,146.60x = 935,889.08 × 448,305.29
  4. Step 4: Simplify right side
    678,146.60x = 419,564,018,496.26
  5. Step 5: Solve for x
    x = 419,564,018,496.26/678,146.60
  6. Step 6: Final answer
    x = 618,692.21

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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.