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Finding the Fourth Proportional to 715,568.69, 987,073.61 and 446,830.13

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Solution

The fourth proportional to 715,568.69, 987,073.61 and 446,830.13 is: 616,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,568.69 : 987,073.61 = 446,830.13 : x
  2. Step 2: Convert to fraction form
    715,568.69/987,073.61 = 446,830.13/x
  3. Step 3: Cross multiply
    715,568.69x = 987,073.61 × 446,830.13
  4. Step 4: Simplify right side
    715,568.69x = 441,054,222,306.35
  5. Step 5: Solve for x
    x = 441,054,222,306.35/715,568.69
  6. Step 6: Final answer
    x = 616,368.81

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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.