Home / 8,691,809.20-13,037,713.80-5,479,543.60

Finding the Fourth Proportional to 8,691,809.20, 13,037,713.80 and 5,479,543.60

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Solution

The fourth proportional to 8,691,809.20, 13,037,713.80 and 5,479,543.60 is: 8,219,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,809.20 : 13,037,713.80 = 5,479,543.60 : x
  2. Step 2: Convert to fraction form
    8,691,809.20/13,037,713.80 = 5,479,543.60/x
  3. Step 3: Cross multiply
    8,691,809.20x = 13,037,713.80 × 5,479,543.60
  4. Step 4: Simplify right side
    8,691,809.20x = 71,440,721,211,421.67
  5. Step 5: Solve for x
    x = 71,440,721,211,421.67/8,691,809.20
  6. Step 6: Final answer
    x = 8,219,315.40

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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.