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Finding the Fourth Proportional to 631,520.49, 871,510.82 and 345,058.35

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Solution

The fourth proportional to 631,520.49, 871,510.82 and 345,058.35 is: 476,187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,520.49 : 871,510.82 = 345,058.35 : x
  2. Step 2: Convert to fraction form
    631,520.49/871,510.82 = 345,058.35/x
  3. Step 3: Cross multiply
    631,520.49x = 871,510.82 × 345,058.35
  4. Step 4: Simplify right side
    631,520.49x = 300,722,083,831.06
  5. Step 5: Solve for x
    x = 300,722,083,831.06/631,520.49
  6. Step 6: Final answer
    x = 476,187.37

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1.5x scale

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.