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Finding the Fourth Proportional to 630,195.92, 943,073.40 and 393,650

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Solution

The fourth proportional to 630,195.92, 943,073.40 and 393,650 is: 589,087.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,195.92 : 943,073.40 = 393,650 : x
  2. Step 2: Convert to fraction form
    630,195.92/943,073.40 = 393,650/x
  3. Step 3: Cross multiply
    630,195.92x = 943,073.40 × 393,650
  4. Step 4: Simplify right side
    630,195.92x = 371,240,843,910
  5. Step 5: Solve for x
    x = 371,240,843,910/630,195.92
  6. Step 6: Final answer
    x = 589,087.98

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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.