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Finding the Fourth Proportional to 704,712.06, 972,550.53 and 398,788.56

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Solution

The fourth proportional to 704,712.06, 972,550.53 and 398,788.56 is: 550,355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,712.06 : 972,550.53 = 398,788.56 : x
  2. Step 2: Convert to fraction form
    704,712.06/972,550.53 = 398,788.56/x
  3. Step 3: Cross multiply
    704,712.06x = 972,550.53 × 398,788.56
  4. Step 4: Simplify right side
    704,712.06x = 387,842,025,385.94
  5. Step 5: Solve for x
    x = 387,842,025,385.94/704,712.06
  6. Step 6: Final answer
    x = 550,355.31

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1.5x scale

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.