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Finding the Fourth Proportional to 626,275, 864,234.30 and 339,784.12

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Solution

The fourth proportional to 626,275, 864,234.30 and 339,784.12 is: 468,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,275 : 864,234.30 = 339,784.12 : x
  2. Step 2: Convert to fraction form
    626,275/864,234.30 = 339,784.12/x
  3. Step 3: Cross multiply
    626,275x = 864,234.30 × 339,784.12
  4. Step 4: Simplify right side
    626,275x = 293,653,091,099.32
  5. Step 5: Solve for x
    x = 293,653,091,099.32/626,275
  6. Step 6: Final answer
    x = 468,888.41

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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.