Home / 7,790,695.20-11,686,042.80-7,678,720.80

Finding the Fourth Proportional to 7,790,695.20, 11,686,042.80 and 7,678,720.80

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Solution

The fourth proportional to 7,790,695.20, 11,686,042.80 and 7,678,720.80 is: 11,518,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790,695.20 : 11,686,042.80 = 7,678,720.80 : x
  2. Step 2: Convert to fraction form
    7,790,695.20/11,686,042.80 = 7,678,720.80/x
  3. Step 3: Cross multiply
    7,790,695.20x = 11,686,042.80 × 7,678,720.80
  4. Step 4: Simplify right side
    7,790,695.20x = 89,733,859,918,050.25
  5. Step 5: Solve for x
    x = 89,733,859,918,050.25/7,790,695.20
  6. Step 6: Final answer
    x = 11,518,081.20

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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.