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Finding the Fourth Proportional to 631,345.60, 871,040.82 and 359,345.44

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Solution

The fourth proportional to 631,345.60, 871,040.82 and 359,345.44 is: 495,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,345.60 : 871,040.82 = 359,345.44 : x
  2. Step 2: Convert to fraction form
    631,345.60/871,040.82 = 359,345.44/x
  3. Step 3: Cross multiply
    631,345.60x = 871,040.82 × 359,345.44
  4. Step 4: Simplify right side
    631,345.60x = 313,004,546,720.86
  5. Step 5: Solve for x
    x = 313,004,546,720.86/631,345.60
  6. Step 6: Final answer
    x = 495,773.70

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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.