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Finding the Fourth Proportional to 631,931.73, 871,852.87 and 359,807.16

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Solution

The fourth proportional to 631,931.73, 871,852.87 and 359,807.16 is: 496,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,931.73 : 871,852.87 = 359,807.16 : x
  2. Step 2: Convert to fraction form
    631,931.73/871,852.87 = 359,807.16/x
  3. Step 3: Cross multiply
    631,931.73x = 871,852.87 × 359,807.16
  4. Step 4: Simplify right side
    631,931.73x = 313,698,906,787.84
  5. Step 5: Solve for x
    x = 313,698,906,787.84/631,931.73
  6. Step 6: Final answer
    x = 496,412.66

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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.