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Finding the Fourth Proportional to 631,354.83, 871,556.51 and 402,226.34

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Solution

The fourth proportional to 631,354.83, 871,556.51 and 402,226.34 is: 555,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,354.83 : 871,556.51 = 402,226.34 : x
  2. Step 2: Convert to fraction form
    631,354.83/871,556.51 = 402,226.34/x
  3. Step 3: Cross multiply
    631,354.83x = 871,556.51 × 402,226.34
  4. Step 4: Simplify right side
    631,354.83x = 350,562,978,751.56
  5. Step 5: Solve for x
    x = 350,562,978,751.56/631,354.83
  6. Step 6: Final answer
    x = 555,255.08

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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.