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Finding the Fourth Proportional to 662,479.91, 993,698.65 and 278,432.22

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Solution

The fourth proportional to 662,479.91, 993,698.65 and 278,432.22 is: 417,639.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,479.91 : 993,698.65 = 278,432.22 : x
  2. Step 2: Convert to fraction form
    662,479.91/993,698.65 = 278,432.22/x
  3. Step 3: Cross multiply
    662,479.91x = 993,698.65 × 278,432.22
  4. Step 4: Simplify right side
    662,479.91x = 276,677,721,130.50
  5. Step 5: Solve for x
    x = 276,677,721,130.50/662,479.91
  6. Step 6: Final answer
    x = 417,639.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.