Home / 490,005,245-676,198,686.78-266,988,772.61

Finding the Fourth Proportional to 490,005,245, 676,198,686.78 and 266,988,772.61

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Solution

The fourth proportional to 490,005,245, 676,198,686.78 and 266,988,772.61 is: 368,439,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,005,245 : 676,198,686.78 = 266,988,772.61 : x
  2. Step 2: Convert to fraction form
    490,005,245/676,198,686.78 = 266,988,772.61/x
  3. Step 3: Cross multiply
    490,005,245x = 676,198,686.78 × 266,988,772.61
  4. Step 4: Simplify right side
    490,005,245x = 180,537,457,423,886,048
  5. Step 5: Solve for x
    x = 180,537,457,423,886,048/490,005,245
  6. Step 6: Final answer
    x = 368,439,846.85

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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.