Home / 8,221,479.40-12,332,219.10-7,885,556.20

Finding the Fourth Proportional to 8,221,479.40, 12,332,219.10 and 7,885,556.20

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Solution

The fourth proportional to 8,221,479.40, 12,332,219.10 and 7,885,556.20 is: 11,828,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,479.40 : 12,332,219.10 = 7,885,556.20 : x
  2. Step 2: Convert to fraction form
    8,221,479.40/12,332,219.10 = 7,885,556.20/x
  3. Step 3: Cross multiply
    8,221,479.40x = 12,332,219.10 × 7,885,556.20
  4. Step 4: Simplify right side
    8,221,479.40x = 97,246,406,783,763.42
  5. Step 5: Solve for x
    x = 97,246,406,783,763.42/8,221,479.40
  6. Step 6: Final answer
    x = 11,828,334.30

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Double scale
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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.