Home / 851,440,521.70-1,277,160,782.55-621,858,009.70

Finding the Fourth Proportional to 851,440,521.70, 1,277,160,782.55 and 621,858,009.70

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Solution

The fourth proportional to 851,440,521.70, 1,277,160,782.55 and 621,858,009.70 is: 932,787,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,440,521.70 : 1,277,160,782.55 = 621,858,009.70 : x
  2. Step 2: Convert to fraction form
    851,440,521.70/1,277,160,782.55 = 621,858,009.70/x
  3. Step 3: Cross multiply
    851,440,521.70x = 1,277,160,782.55 × 621,858,009.70
  4. Step 4: Simplify right side
    851,440,521.70x = 794,212,662,303,437,568
  5. Step 5: Solve for x
    x = 794,212,662,303,437,568/851,440,521.70
  6. Step 6: Final answer
    x = 932,787,014.55

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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.