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Finding the Fourth Proportional to 626,817.31, 865,011.35 and 340,337.41

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Solution

The fourth proportional to 626,817.31, 865,011.35 and 340,337.41 is: 469,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,817.31 : 865,011.35 = 340,337.41 : x
  2. Step 2: Convert to fraction form
    626,817.31/865,011.35 = 340,337.41/x
  3. Step 3: Cross multiply
    626,817.31x = 865,011.35 × 340,337.41
  4. Step 4: Simplify right side
    626,817.31x = 294,395,719,891.65
  5. Step 5: Solve for x
    x = 294,395,719,891.65/626,817.31
  6. Step 6: Final answer
    x = 469,667.50

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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.