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Finding the Fourth Proportional to 627,012.32, 865,276.80 and 340,532.48

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Solution

The fourth proportional to 627,012.32, 865,276.80 and 340,532.48 is: 469,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,012.32 : 865,276.80 = 340,532.48 : x
  2. Step 2: Convert to fraction form
    627,012.32/865,276.80 = 340,532.48/x
  3. Step 3: Cross multiply
    627,012.32x = 865,276.80 × 340,532.48
  4. Step 4: Simplify right side
    627,012.32x = 294,654,854,590.46
  5. Step 5: Solve for x
    x = 294,654,854,590.46/627,012.32
  6. Step 6: Final answer
    x = 469,934.71

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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.