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Finding the Fourth Proportional to 644,808.36, 965,387.61 and 492,831.30

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Solution

The fourth proportional to 644,808.36, 965,387.61 and 492,831.30 is: 737,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,808.36 : 965,387.61 = 492,831.30 : x
  2. Step 2: Convert to fraction form
    644,808.36/965,387.61 = 492,831.30/x
  3. Step 3: Cross multiply
    644,808.36x = 965,387.61 × 492,831.30
  4. Step 4: Simplify right side
    644,808.36x = 475,773,230,840.19
  5. Step 5: Solve for x
    x = 475,773,230,840.19/644,808.36
  6. Step 6: Final answer
    x = 737,852.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.