Home / 12,308,811.20-18,463,216.80-3,791,758.40

Finding the Fourth Proportional to 12,308,811.20, 18,463,216.80 and 3,791,758.40

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Solution

The fourth proportional to 12,308,811.20, 18,463,216.80 and 3,791,758.40 is: 5,687,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308,811.20 : 18,463,216.80 = 3,791,758.40 : x
  2. Step 2: Convert to fraction form
    12,308,811.20/18,463,216.80 = 3,791,758.40/x
  3. Step 3: Cross multiply
    12,308,811.20x = 18,463,216.80 × 3,791,758.40
  4. Step 4: Simplify right side
    12,308,811.20x = 70,008,057,392,421.12
  5. Step 5: Solve for x
    x = 70,008,057,392,421.12/12,308,811.20
  6. Step 6: Final answer
    x = 5,687,637.60

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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.