Home / 1,217,944,055.68-1,680,764,456.88-661,027,110.72

Finding the Fourth Proportional to 1,217,944,055.68, 1,680,764,456.88 and 661,027,110.72

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Solution

The fourth proportional to 1,217,944,055.68, 1,680,764,456.88 and 661,027,110.72 is: 912,218,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,944,055.68 : 1,680,764,456.88 = 661,027,110.72 : x
  2. Step 2: Convert to fraction form
    1,217,944,055.68/1,680,764,456.88 = 661,027,110.72/x
  3. Step 3: Cross multiply
    1,217,944,055.68x = 1,680,764,456.88 × 661,027,110.72
  4. Step 4: Simplify right side
    1,217,944,055.68x = 1,111,030,872,732,256,512
  5. Step 5: Solve for x
    x = 1,111,030,872,732,256,512/1,217,944,055.68
  6. Step 6: Final answer
    x = 912,218,313.76

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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.