Home / 1,217,957,330.66-1,680,797,240.62-661,047,053.54

Finding the Fourth Proportional to 1,217,957,330.66, 1,680,797,240.62 and 661,047,053.54

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Solution

The fourth proportional to 1,217,957,330.66, 1,680,797,240.62 and 661,047,053.54 is: 912,253,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,957,330.66 : 1,680,797,240.62 = 661,047,053.54 : x
  2. Step 2: Convert to fraction form
    1,217,957,330.66/1,680,797,240.62 = 661,047,053.54/x
  3. Step 3: Cross multiply
    1,217,957,330.66x = 1,680,797,240.62 × 661,047,053.54
  4. Step 4: Simplify right side
    1,217,957,330.66x = 1,111,086,063,499,956,736
  5. Step 5: Solve for x
    x = 1,111,086,063,499,956,736/1,217,957,330.66
  6. Step 6: Final answer
    x = 912,253,685.36

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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.