Home / 520,015,922.40-780,023,883.60-213,527,992.80

Finding the Fourth Proportional to 520,015,922.40, 780,023,883.60 and 213,527,992.80

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Solution

The fourth proportional to 520,015,922.40, 780,023,883.60 and 213,527,992.80 is: 320,291,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,015,922.40 : 780,023,883.60 = 213,527,992.80 : x
  2. Step 2: Convert to fraction form
    520,015,922.40/780,023,883.60 = 213,527,992.80/x
  3. Step 3: Cross multiply
    520,015,922.40x = 780,023,883.60 × 213,527,992.80
  4. Step 4: Simplify right side
    520,015,922.40x = 166,556,934,201,168,864
  5. Step 5: Solve for x
    x = 166,556,934,201,168,864/520,015,922.40
  6. Step 6: Final answer
    x = 320,291,989.20

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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.