Home / 1,277,787,890.61-1,763,427,931.61-720,667,661.49

Finding the Fourth Proportional to 1,277,787,890.61, 1,763,427,931.61 and 720,667,661.49

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Solution

The fourth proportional to 1,277,787,890.61, 1,763,427,931.61 and 720,667,661.49 is: 994,566,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,787,890.61 : 1,763,427,931.61 = 720,667,661.49 : x
  2. Step 2: Convert to fraction form
    1,277,787,890.61/1,763,427,931.61 = 720,667,661.49/x
  3. Step 3: Cross multiply
    1,277,787,890.61x = 1,763,427,931.61 × 720,667,661.49
  4. Step 4: Simplify right side
    1,277,787,890.61x = 1,270,845,483,675,922,944
  5. Step 5: Solve for x
    x = 1,270,845,483,675,922,944/1,277,787,890.61
  6. Step 6: Final answer
    x = 994,566,854.96

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Double scale
Find fourth proportional to 1,277,787,891.61, 1,763,427,932.99 and 720,667,662.49
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.