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Finding the Fourth Proportional to 723,259.73, 998,122.10 and 400,999.82

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Solution

The fourth proportional to 723,259.73, 998,122.10 and 400,999.82 is: 553,392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,259.73 : 998,122.10 = 400,999.82 : x
  2. Step 2: Convert to fraction form
    723,259.73/998,122.10 = 400,999.82/x
  3. Step 3: Cross multiply
    723,259.73x = 998,122.10 × 400,999.82
  4. Step 4: Simplify right side
    723,259.73x = 400,246,775,442.41
  5. Step 5: Solve for x
    x = 400,246,775,442.41/723,259.73
  6. Step 6: Final answer
    x = 553,392.86

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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.