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Finding the Fourth Proportional to 715,566.56, 987,070.67 and 446,828

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Solution

The fourth proportional to 715,566.56, 987,070.67 and 446,828 is: 616,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,566.56 : 987,070.67 = 446,828 : x
  2. Step 2: Convert to fraction form
    715,566.56/987,070.67 = 446,828/x
  3. Step 3: Cross multiply
    715,566.56x = 987,070.67 × 446,828
  4. Step 4: Simplify right side
    715,566.56x = 441,050,813,334.76
  5. Step 5: Solve for x
    x = 441,050,813,334.76/715,566.56
  6. Step 6: Final answer
    x = 616,365.88

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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.