Home / 1,243,205,072.35-1,715,614,272.25-678,689,953.92

Finding the Fourth Proportional to 1,243,205,072.35, 1,715,614,272.25 and 678,689,953.92

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Solution

The fourth proportional to 1,243,205,072.35, 1,715,614,272.25 and 678,689,953.92 is: 936,587,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,205,072.35 : 1,715,614,272.25 = 678,689,953.92 : x
  2. Step 2: Convert to fraction form
    1,243,205,072.35/1,715,614,272.25 = 678,689,953.92/x
  3. Step 3: Cross multiply
    1,243,205,072.35x = 1,715,614,272.25 × 678,689,953.92
  4. Step 4: Simplify right side
    1,243,205,072.35x = 1,164,370,171,377,846,784
  5. Step 5: Solve for x
    x = 1,164,370,171,377,846,784/1,243,205,072.35
  6. Step 6: Final answer
    x = 936,587,371.85

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Double scale
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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.