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Finding the Fourth Proportional to 715,569.69, 987,074.98 and 446,831.13

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Solution

The fourth proportional to 715,569.69, 987,074.98 and 446,831.13 is: 616,370.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,569.69 : 987,074.98 = 446,831.13 : x
  2. Step 2: Convert to fraction form
    715,569.69/987,074.98 = 446,831.13/x
  3. Step 3: Cross multiply
    715,569.69x = 987,074.98 × 446,831.13
  4. Step 4: Simplify right side
    715,569.69x = 441,055,828,708.13
  5. Step 5: Solve for x
    x = 441,055,828,708.13/715,569.69
  6. Step 6: Final answer
    x = 616,370.19

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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.