Home / 1,293,365,145.28-1,940,019,863.28-360,663,142.72

Finding the Fourth Proportional to 1,293,365,145.28, 1,940,019,863.28 and 360,663,142.72

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Solution

The fourth proportional to 1,293,365,145.28, 1,940,019,863.28 and 360,663,142.72 is: 540,986,946.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,365,145.28 : 1,940,019,863.28 = 360,663,142.72 : x
  2. Step 2: Convert to fraction form
    1,293,365,145.28/1,940,019,863.28 = 360,663,142.72/x
  3. Step 3: Cross multiply
    1,293,365,145.28x = 1,940,019,863.28 × 360,663,142.72
  4. Step 4: Simplify right side
    1,293,365,145.28x = 699,693,660,829,789,568
  5. Step 5: Solve for x
    x = 699,693,660,829,789,568/1,293,365,145.28
  6. Step 6: Final answer
    x = 540,986,946.64

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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.