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Finding the Fourth Proportional to 631,711.62, 948,223.71 and 365,991.30

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Solution

The fourth proportional to 631,711.62, 948,223.71 and 365,991.30 is: 549,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,711.62 : 948,223.71 = 365,991.30 : x
  2. Step 2: Convert to fraction form
    631,711.62/948,223.71 = 365,991.30/x
  3. Step 3: Cross multiply
    631,711.62x = 948,223.71 × 365,991.30
  4. Step 4: Simplify right side
    631,711.62x = 347,041,628,313.72
  5. Step 5: Solve for x
    x = 347,041,628,313.72/631,711.62
  6. Step 6: Final answer
    x = 549,367.18

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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.