Home / 695,428.72-1,043,143.10-379,713.40

Finding the Fourth Proportional to 695,428.72, 1,043,143.10 and 379,713.40

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Solution

The fourth proportional to 695,428.72, 1,043,143.10 and 379,713.40 is: 569,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,428.72 : 1,043,143.10 = 379,713.40 : x
  2. Step 2: Convert to fraction form
    695,428.72/1,043,143.10 = 379,713.40/x
  3. Step 3: Cross multiply
    695,428.72x = 1,043,143.10 × 379,713.40
  4. Step 4: Simplify right side
    695,428.72x = 396,095,413,187.54
  5. Step 5: Solve for x
    x = 396,095,413,187.54/695,428.72
  6. Step 6: Final answer
    x = 569,570.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.