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Finding the Fourth Proportional to 704,673.30, 972,435.66 and 398,744.11

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Solution

The fourth proportional to 704,673.30, 972,435.66 and 398,744.11 is: 550,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,673.30 : 972,435.66 = 398,744.11 : x
  2. Step 2: Convert to fraction form
    704,673.30/972,435.66 = 398,744.11/x
  3. Step 3: Cross multiply
    704,673.30x = 972,435.66 × 398,744.11
  4. Step 4: Simplify right side
    704,673.30x = 387,752,991,778.96
  5. Step 5: Solve for x
    x = 387,752,991,778.96/704,673.30
  6. Step 6: Final answer
    x = 550,259.24

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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.