Home / 780,023,885.60-1,170,035,828.40-320,291,991.20

Finding the Fourth Proportional to 780,023,885.60, 1,170,035,828.40 and 320,291,991.20

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Solution

The fourth proportional to 780,023,885.60, 1,170,035,828.40 and 320,291,991.20 is: 480,437,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,023,885.60 : 1,170,035,828.40 = 320,291,991.20 : x
  2. Step 2: Convert to fraction form
    780,023,885.60/1,170,035,828.40 = 320,291,991.20/x
  3. Step 3: Cross multiply
    780,023,885.60x = 1,170,035,828.40 × 320,291,991.20
  4. Step 4: Simplify right side
    780,023,885.60x = 374,753,105,253,577,536
  5. Step 5: Solve for x
    x = 374,753,105,253,577,536/780,023,885.60
  6. Step 6: Final answer
    x = 480,437,986.80

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1.5x scale

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.