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Finding the Fourth Proportional to 871,802.82, 1,203,624.63 and 691,244.10

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Solution

The fourth proportional to 871,802.82, 1,203,624.63 and 691,244.10 is: 954,342.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,802.82 : 1,203,624.63 = 691,244.10 : x
  2. Step 2: Convert to fraction form
    871,802.82/1,203,624.63 = 691,244.10/x
  3. Step 3: Cross multiply
    871,802.82x = 1,203,624.63 × 691,244.10
  4. Step 4: Simplify right side
    871,802.82x = 831,998,424,102.18
  5. Step 5: Solve for x
    x = 831,998,424,102.18/871,802.82
  6. Step 6: Final answer
    x = 954,342.43

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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.