Home / 638,249,412,824.10-880,777,659,348.12-353,109,973,653.54

Finding the Fourth Proportional to 638,249,412,824.10, 880,777,659,348.12 and 353,109,973,653.54

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Solution

The fourth proportional to 638,249,412,824.10, 880,777,659,348.12 and 353,109,973,653.54 is: 487,288,150,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,249,412,824.10 : 880,777,659,348.12 = 353,109,973,653.54 : x
  2. Step 2: Convert to fraction form
    638,249,412,824.10/880,777,659,348.12 = 353,109,973,653.54/x
  3. Step 3: Cross multiply
    638,249,412,824.10x = 880,777,659,348.12 × 353,109,973,653.54
  4. Step 4: Simplify right side
    638,249,412,824.10x = 311,011,376,087,041,249,902,592
  5. Step 5: Solve for x
    x = 311,011,376,087,041,249,902,592/638,249,412,824.10
  6. Step 6: Final answer
    x = 487,288,150,741.72

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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.