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Finding the Fourth Proportional to 631,587.30, 871,493.85 and 359,666.34

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Solution

The fourth proportional to 631,587.30, 871,493.85 and 359,666.34 is: 496,284.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,587.30 : 871,493.85 = 359,666.34 : x
  2. Step 2: Convert to fraction form
    631,587.30/871,493.85 = 359,666.34/x
  3. Step 3: Cross multiply
    631,587.30x = 871,493.85 × 359,666.34
  4. Step 4: Simplify right side
    631,587.30x = 313,447,003,362.01
  5. Step 5: Solve for x
    x = 313,447,003,362.01/631,587.30
  6. Step 6: Final answer
    x = 496,284.53

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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.