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Finding the Fourth Proportional to 704,571.67, 972,303.29 and 398,645.45

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Solution

The fourth proportional to 704,571.67, 972,303.29 and 398,645.45 is: 550,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,571.67 : 972,303.29 = 398,645.45 : x
  2. Step 2: Convert to fraction form
    704,571.67/972,303.29 = 398,645.45/x
  3. Step 3: Cross multiply
    704,571.67x = 972,303.29 × 398,645.45
  4. Step 4: Simplify right side
    704,571.67x = 387,604,283,107.23
  5. Step 5: Solve for x
    x = 387,604,283,107.23/704,571.67
  6. Step 6: Final answer
    x = 550,127.55

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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.