Home / 644,491,861.68-888,694,966.08-435,284,792.76

Finding the Fourth Proportional to 644,491,861.68, 888,694,966.08 and 435,284,792.76

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Solution

The fourth proportional to 644,491,861.68, 888,694,966.08 and 435,284,792.76 is: 600,217,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,491,861.68 : 888,694,966.08 = 435,284,792.76 : x
  2. Step 2: Convert to fraction form
    644,491,861.68/888,694,966.08 = 435,284,792.76/x
  3. Step 3: Cross multiply
    644,491,861.68x = 888,694,966.08 × 435,284,792.76
  4. Step 4: Simplify right side
    644,491,861.68x = 386,835,404,136,988,032
  5. Step 5: Solve for x
    x = 386,835,404,136,988,032/644,491,861.68
  6. Step 6: Final answer
    x = 600,217,670.91

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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.