Home / 871,707.20-1,308,021.60-398,465.60

Finding the Fourth Proportional to 871,707.20, 1,308,021.60 and 398,465.60

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Solution

The fourth proportional to 871,707.20, 1,308,021.60 and 398,465.60 is: 597,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,707.20 : 1,308,021.60 = 398,465.60 : x
  2. Step 2: Convert to fraction form
    871,707.20/1,308,021.60 = 398,465.60/x
  3. Step 3: Cross multiply
    871,707.20x = 1,308,021.60 × 398,465.60
  4. Step 4: Simplify right side
    871,707.20x = 521,201,611,656.96
  5. Step 5: Solve for x
    x = 521,201,611,656.96/871,707.20
  6. Step 6: Final answer
    x = 597,909.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.