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Finding the Fourth Proportional to 607,257, 838,014.66 and 338,985

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Solution

The fourth proportional to 607,257, 838,014.66 and 338,985 is: 467,799.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,257 : 838,014.66 = 338,985 : x
  2. Step 2: Convert to fraction form
    607,257/838,014.66 = 338,985/x
  3. Step 3: Cross multiply
    607,257x = 838,014.66 × 338,985
  4. Step 4: Simplify right side
    607,257x = 284,074,399,520.10
  5. Step 5: Solve for x
    x = 284,074,399,520.10/607,257
  6. Step 6: Final answer
    x = 467,799.30

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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.