Home / 1,220,172,717.11-1,661,311,728.95-1,216,298,512.22

Finding the Fourth Proportional to 1,220,172,717.11, 1,661,311,728.95 and 1,216,298,512.22

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Solution

The fourth proportional to 1,220,172,717.11, 1,661,311,728.95 and 1,216,298,512.22 is: 1,656,036,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,172,717.11 : 1,661,311,728.95 = 1,216,298,512.22 : x
  2. Step 2: Convert to fraction form
    1,220,172,717.11/1,661,311,728.95 = 1,216,298,512.22/x
  3. Step 3: Cross multiply
    1,220,172,717.11x = 1,661,311,728.95 × 1,216,298,512.22
  4. Step 4: Simplify right side
    1,220,172,717.11x = 2,020,650,984,241,132,544
  5. Step 5: Solve for x
    x = 2,020,650,984,241,132,544/1,220,172,717.11
  6. Step 6: Final answer
    x = 1,656,036,851.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.