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Finding the Fourth Proportional to 627,339.74, 865,736.71 and 340,864.61

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Solution

The fourth proportional to 627,339.74, 865,736.71 and 340,864.61 is: 470,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,339.74 : 865,736.71 = 340,864.61 : x
  2. Step 2: Convert to fraction form
    627,339.74/865,736.71 = 340,864.61/x
  3. Step 3: Cross multiply
    627,339.74x = 865,736.71 × 340,864.61
  4. Step 4: Simplify right side
    627,339.74x = 295,099,000,835.99
  5. Step 5: Solve for x
    x = 295,099,000,835.99/627,339.74
  6. Step 6: Final answer
    x = 470,397.43

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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.