Home / 838,256,812.80-1,148,415,931.20-806,839,180.80

Finding the Fourth Proportional to 838,256,812.80, 1,148,415,931.20 and 806,839,180.80

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Solution

The fourth proportional to 838,256,812.80, 1,148,415,931.20 and 806,839,180.80 is: 1,105,373,621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,256,812.80 : 1,148,415,931.20 = 806,839,180.80 : x
  2. Step 2: Convert to fraction form
    838,256,812.80/1,148,415,931.20 = 806,839,180.80/x
  3. Step 3: Cross multiply
    838,256,812.80x = 1,148,415,931.20 × 806,839,180.80
  4. Step 4: Simplify right side
    838,256,812.80x = 926,586,969,147,077,120
  5. Step 5: Solve for x
    x = 926,586,969,147,077,120/838,256,812.80
  6. Step 6: Final answer
    x = 1,105,373,621.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.