Home / 1,186,812,005.80-1,780,218,008.70-819,479,986.60

Finding the Fourth Proportional to 1,186,812,005.80, 1,780,218,008.70 and 819,479,986.60

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Solution

The fourth proportional to 1,186,812,005.80, 1,780,218,008.70 and 819,479,986.60 is: 1,229,219,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,812,005.80 : 1,780,218,008.70 = 819,479,986.60 : x
  2. Step 2: Convert to fraction form
    1,186,812,005.80/1,780,218,008.70 = 819,479,986.60/x
  3. Step 3: Cross multiply
    1,186,812,005.80x = 1,780,218,008.70 × 819,479,986.60
  4. Step 4: Simplify right side
    1,186,812,005.80x = 1,458,853,029,914,554,880
  5. Step 5: Solve for x
    x = 1,458,853,029,914,554,880/1,186,812,005.80
  6. Step 6: Final answer
    x = 1,229,219,979.90

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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.