Home / 919,539,403.20-1,379,309,104.80-819,770,212.80

Finding the Fourth Proportional to 919,539,403.20, 1,379,309,104.80 and 819,770,212.80

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Solution

The fourth proportional to 919,539,403.20, 1,379,309,104.80 and 819,770,212.80 is: 1,229,655,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,539,403.20 : 1,379,309,104.80 = 819,770,212.80 : x
  2. Step 2: Convert to fraction form
    919,539,403.20/1,379,309,104.80 = 819,770,212.80/x
  3. Step 3: Cross multiply
    919,539,403.20x = 1,379,309,104.80 × 819,770,212.80
  4. Step 4: Simplify right side
    919,539,403.20x = 1,130,716,518,358,873,344
  5. Step 5: Solve for x
    x = 1,130,716,518,358,873,344/919,539,403.20
  6. Step 6: Final answer
    x = 1,229,655,319.20

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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.