Home / 613,291,269.30-919,936,903.95-285,657,892.80

Finding the Fourth Proportional to 613,291,269.30, 919,936,903.95 and 285,657,892.80

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Solution

The fourth proportional to 613,291,269.30, 919,936,903.95 and 285,657,892.80 is: 428,486,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,291,269.30 : 919,936,903.95 = 285,657,892.80 : x
  2. Step 2: Convert to fraction form
    613,291,269.30/919,936,903.95 = 285,657,892.80/x
  3. Step 3: Cross multiply
    613,291,269.30x = 919,936,903.95 × 285,657,892.80
  4. Step 4: Simplify right side
    613,291,269.30x = 262,787,237,491,313,024
  5. Step 5: Solve for x
    x = 262,787,237,491,313,024/613,291,269.30
  6. Step 6: Final answer
    x = 428,486,839.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.