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Finding the Fourth Proportional to 704,990.97, 972,888.77 and 382,701.29

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Solution

The fourth proportional to 704,990.97, 972,888.77 and 382,701.29 is: 528,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,990.97 : 972,888.77 = 382,701.29 : x
  2. Step 2: Convert to fraction form
    704,990.97/972,888.77 = 382,701.29/x
  3. Step 3: Cross multiply
    704,990.97x = 972,888.77 × 382,701.29
  4. Step 4: Simplify right side
    704,990.97x = 372,325,783,397.82
  5. Step 5: Solve for x
    x = 372,325,783,397.82/704,990.97
  6. Step 6: Final answer
    x = 528,128.44

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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.