Home / 8,660,313.40-12,990,470.10-6,644,774.20

Finding the Fourth Proportional to 8,660,313.40, 12,990,470.10 and 6,644,774.20

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Solution

The fourth proportional to 8,660,313.40, 12,990,470.10 and 6,644,774.20 is: 9,967,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660,313.40 : 12,990,470.10 = 6,644,774.20 : x
  2. Step 2: Convert to fraction form
    8,660,313.40/12,990,470.10 = 6,644,774.20/x
  3. Step 3: Cross multiply
    8,660,313.40x = 12,990,470.10 × 6,644,774.20
  4. Step 4: Simplify right side
    8,660,313.40x = 86,318,740,566,351.42
  5. Step 5: Solve for x
    x = 86,318,740,566,351.42/8,660,313.40
  6. Step 6: Final answer
    x = 9,967,161.30

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Similar ratio
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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.