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Finding the Fourth Proportional to 648,057.70, 972,086.55 and 448,603.30

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Solution

The fourth proportional to 648,057.70, 972,086.55 and 448,603.30 is: 672,904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,057.70 : 972,086.55 = 448,603.30 : x
  2. Step 2: Convert to fraction form
    648,057.70/972,086.55 = 448,603.30/x
  3. Step 3: Cross multiply
    648,057.70x = 972,086.55 × 448,603.30
  4. Step 4: Simplify right side
    648,057.70x = 436,081,234,215.62
  5. Step 5: Solve for x
    x = 436,081,234,215.62/648,057.70
  6. Step 6: Final answer
    x = 672,904.95

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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.