Home / 1,238,784,311.40-1,858,176,467.10-715,049,205.90

Finding the Fourth Proportional to 1,238,784,311.40, 1,858,176,467.10 and 715,049,205.90

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Solution

The fourth proportional to 1,238,784,311.40, 1,858,176,467.10 and 715,049,205.90 is: 1,072,573,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,784,311.40 : 1,858,176,467.10 = 715,049,205.90 : x
  2. Step 2: Convert to fraction form
    1,238,784,311.40/1,858,176,467.10 = 715,049,205.90/x
  3. Step 3: Cross multiply
    1,238,784,311.40x = 1,858,176,467.10 × 715,049,205.90
  4. Step 4: Simplify right side
    1,238,784,311.40x = 1,328,687,607,221,922,304
  5. Step 5: Solve for x
    x = 1,328,687,607,221,922,304/1,238,784,311.40
  6. Step 6: Final answer
    x = 1,072,573,808.85

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Double scale
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Similar ratio
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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.