Home / 638,249,412,829.70-880,777,659,355.85-353,109,973,659.15

Finding the Fourth Proportional to 638,249,412,829.70, 880,777,659,355.85 and 353,109,973,659.15

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Solution

The fourth proportional to 638,249,412,829.70, 880,777,659,355.85 and 353,109,973,659.15 is: 487,288,150,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,249,412,829.70 : 880,777,659,355.85 = 353,109,973,659.15 : x
  2. Step 2: Convert to fraction form
    638,249,412,829.70/880,777,659,355.85 = 353,109,973,659.15/x
  3. Step 3: Cross multiply
    638,249,412,829.70x = 880,777,659,355.85 × 353,109,973,659.15
  4. Step 4: Simplify right side
    638,249,412,829.70x = 311,011,376,094,711,994,384,384
  5. Step 5: Solve for x
    x = 311,011,376,094,711,994,384,384/638,249,412,829.70
  6. Step 6: Final answer
    x = 487,288,150,749.46

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Double scale
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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.