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Finding the Fourth Proportional to 524,657,618.40, 786,986,427.60 and 251,962,629.60

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Solution

The fourth proportional to 524,657,618.40, 786,986,427.60 and 251,962,629.60 is: 377,943,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,657,618.40 : 786,986,427.60 = 251,962,629.60 : x
  2. Step 2: Convert to fraction form
    524,657,618.40/786,986,427.60 = 251,962,629.60/x
  3. Step 3: Cross multiply
    524,657,618.40x = 786,986,427.60 × 251,962,629.60
  4. Step 4: Simplify right side
    524,657,618.40x = 198,291,169,757,606,016
  5. Step 5: Solve for x
    x = 198,291,169,757,606,016/524,657,618.40
  6. Step 6: Final answer
    x = 377,943,944.40

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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.