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Finding the Fourth Proportional to 704,788.43, 972,105.62 and 646,831.85

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Solution

The fourth proportional to 704,788.43, 972,105.62 and 646,831.85 is: 892,166.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,788.43 : 972,105.62 = 646,831.85 : x
  2. Step 2: Convert to fraction form
    704,788.43/972,105.62 = 646,831.85/x
  3. Step 3: Cross multiply
    704,788.43x = 972,105.62 × 646,831.85
  4. Step 4: Simplify right side
    704,788.43x = 628,788,868,485.31
  5. Step 5: Solve for x
    x = 628,788,868,485.31/704,788.43
  6. Step 6: Final answer
    x = 892,166.85

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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.