Home / 1,213,643,816.60-1,817,386,428.90-667,768,616.60

Finding the Fourth Proportional to 1,213,643,816.60, 1,817,386,428.90 and 667,768,616.60

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Solution

The fourth proportional to 1,213,643,816.60, 1,817,386,428.90 and 667,768,616.60 is: 999,958,640.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,643,816.60 : 1,817,386,428.90 = 667,768,616.60 : x
  2. Step 2: Convert to fraction form
    1,213,643,816.60/1,817,386,428.90 = 667,768,616.60/x
  3. Step 3: Cross multiply
    1,213,643,816.60x = 1,817,386,428.90 × 667,768,616.60
  4. Step 4: Simplify right side
    1,213,643,816.60x = 1,213,593,621,454,167,296
  5. Step 5: Solve for x
    x = 1,213,593,621,454,167,296/1,213,643,816.60
  6. Step 6: Final answer
    x = 999,958,640.96

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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.