Home / 490,009,815.28-676,213,642.37-266,991,496.90

Finding the Fourth Proportional to 490,009,815.28, 676,213,642.37 and 266,991,496.90

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Solution

The fourth proportional to 490,009,815.28, 676,213,642.37 and 266,991,496.90 is: 368,448,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,009,815.28 : 676,213,642.37 = 266,991,496.90 : x
  2. Step 2: Convert to fraction form
    490,009,815.28/676,213,642.37 = 266,991,496.90/x
  3. Step 3: Cross multiply
    490,009,815.28x = 676,213,642.37 × 266,991,496.90
  4. Step 4: Simplify right side
    490,009,815.28x = 180,543,292,603,351,584
  5. Step 5: Solve for x
    x = 180,543,292,603,351,584/490,009,815.28
  6. Step 6: Final answer
    x = 368,448,318.74

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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.