Home / 638,249,412,817.35-880,777,659,338.76-353,109,973,646.79

Finding the Fourth Proportional to 638,249,412,817.35, 880,777,659,338.76 and 353,109,973,646.79

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Solution

The fourth proportional to 638,249,412,817.35, 880,777,659,338.76 and 353,109,973,646.79 is: 487,288,150,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,249,412,817.35 : 880,777,659,338.76 = 353,109,973,646.79 : x
  2. Step 2: Convert to fraction form
    638,249,412,817.35/880,777,659,338.76 = 353,109,973,646.79/x
  3. Step 3: Cross multiply
    638,249,412,817.35x = 880,777,659,338.76 × 353,109,973,646.79
  4. Step 4: Simplify right side
    638,249,412,817.35x = 311,011,376,077,790,896,979,968
  5. Step 5: Solve for x
    x = 311,011,376,077,790,896,979,968/638,249,412,817.35
  6. Step 6: Final answer
    x = 487,288,150,732.38

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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.