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Finding the Fourth Proportional to 631,598.31, 871,762.20 and 359,827.72

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Solution

The fourth proportional to 631,598.31, 871,762.20 and 359,827.72 is: 496,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,598.31 : 871,762.20 = 359,827.72 : x
  2. Step 2: Convert to fraction form
    631,598.31/871,762.20 = 359,827.72/x
  3. Step 3: Cross multiply
    631,598.31x = 871,762.20 × 359,827.72
  4. Step 4: Simplify right side
    631,598.31x = 313,684,201,279.43
  5. Step 5: Solve for x
    x = 313,684,201,279.43/631,598.31
  6. Step 6: Final answer
    x = 496,651.43

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Double scale
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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.