Home / 1,217,944,051.68-1,680,764,451.36-661,027,106.72

Finding the Fourth Proportional to 1,217,944,051.68, 1,680,764,451.36 and 661,027,106.72

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Solution

The fourth proportional to 1,217,944,051.68, 1,680,764,451.36 and 661,027,106.72 is: 912,218,308.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,944,051.68 : 1,680,764,451.36 = 661,027,106.72 : x
  2. Step 2: Convert to fraction form
    1,217,944,051.68/1,680,764,451.36 = 661,027,106.72/x
  3. Step 3: Cross multiply
    1,217,944,051.68x = 1,680,764,451.36 × 661,027,106.72
  4. Step 4: Simplify right side
    1,217,944,051.68x = 1,111,030,862,360,328,960
  5. Step 5: Solve for x
    x = 1,111,030,862,360,328,960/1,217,944,051.68
  6. Step 6: Final answer
    x = 912,218,308.24

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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.