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Finding the Fourth Proportional to 631,533.60, 871,514.85 and 345,055.86

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Solution

The fourth proportional to 631,533.60, 871,514.85 and 345,055.86 is: 476,176.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,533.60 : 871,514.85 = 345,055.86 : x
  2. Step 2: Convert to fraction form
    631,533.60/871,514.85 = 345,055.86/x
  3. Step 3: Cross multiply
    631,533.60x = 871,514.85 × 345,055.86
  4. Step 4: Simplify right side
    631,533.60x = 300,721,306,069.52
  5. Step 5: Solve for x
    x = 300,721,306,069.52/631,533.60
  6. Step 6: Final answer
    x = 476,176.26

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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.