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Finding the Fourth Proportional to 631,503.10, 871,464.10 and 345,017.04

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Solution

The fourth proportional to 631,503.10, 871,464.10 and 345,017.04 is: 476,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,503.10 : 871,464.10 = 345,017.04 : x
  2. Step 2: Convert to fraction form
    631,503.10/871,464.10 = 345,017.04/x
  3. Step 3: Cross multiply
    631,503.10x = 871,464.10 × 345,017.04
  4. Step 4: Simplify right side
    631,503.10x = 300,669,964,248.26
  5. Step 5: Solve for x
    x = 300,669,964,248.26/631,503.10
  6. Step 6: Final answer
    x = 476,117.95

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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.