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Finding the Fourth Proportional to 451,341.69, 622,920.15 and 288,068.73

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Solution

The fourth proportional to 451,341.69, 622,920.15 and 288,068.73 is: 397,578.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,341.69 : 622,920.15 = 288,068.73 : x
  2. Step 2: Convert to fraction form
    451,341.69/622,920.15 = 288,068.73/x
  3. Step 3: Cross multiply
    451,341.69x = 622,920.15 × 288,068.73
  4. Step 4: Simplify right side
    451,341.69x = 179,443,816,501.91
  5. Step 5: Solve for x
    x = 179,443,816,501.91/451,341.69
  6. Step 6: Final answer
    x = 397,578.64

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1.5x scale

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.