Home / 12,312,139.20-18,468,208.80-3,795,086.40

Finding the Fourth Proportional to 12,312,139.20, 18,468,208.80 and 3,795,086.40

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Solution

The fourth proportional to 12,312,139.20, 18,468,208.80 and 3,795,086.40 is: 5,692,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,139.20 : 18,468,208.80 = 3,795,086.40 : x
  2. Step 2: Convert to fraction form
    12,312,139.20/18,468,208.80 = 3,795,086.40/x
  3. Step 3: Cross multiply
    12,312,139.20x = 18,468,208.80 × 3,795,086.40
  4. Step 4: Simplify right side
    12,312,139.20x = 70,088,448,049,240.32
  5. Step 5: Solve for x
    x = 70,088,448,049,240.32/12,312,139.20
  6. Step 6: Final answer
    x = 5,692,629.60

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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.