Home / 1,215,838,611.70-1,678,680,920.10-770,197,441.66

Finding the Fourth Proportional to 1,215,838,611.70, 1,678,680,920.10 and 770,197,441.66

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Solution

The fourth proportional to 1,215,838,611.70, 1,678,680,920.10 and 770,197,441.66 is: 1,063,394,218.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,838,611.70 : 1,678,680,920.10 = 770,197,441.66 : x
  2. Step 2: Convert to fraction form
    1,215,838,611.70/1,678,680,920.10 = 770,197,441.66/x
  3. Step 3: Cross multiply
    1,215,838,611.70x = 1,678,680,920.10 × 770,197,441.66
  4. Step 4: Simplify right side
    1,215,838,611.70x = 1,292,915,750,024,474,624
  5. Step 5: Solve for x
    x = 1,292,915,750,024,474,624/1,215,838,611.70
  6. Step 6: Final answer
    x = 1,063,394,218.26

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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.