Home / 490,005,239-676,198,678.50-266,988,766.62

Finding the Fourth Proportional to 490,005,239, 676,198,678.50 and 266,988,766.62

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Solution

The fourth proportional to 490,005,239, 676,198,678.50 and 266,988,766.62 is: 368,439,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,005,239 : 676,198,678.50 = 266,988,766.62 : x
  2. Step 2: Convert to fraction form
    490,005,239/676,198,678.50 = 266,988,766.62/x
  3. Step 3: Cross multiply
    490,005,239x = 676,198,678.50 × 266,988,766.62
  4. Step 4: Simplify right side
    490,005,239x = 180,537,451,162,788,928
  5. Step 5: Solve for x
    x = 180,537,451,162,788,928/490,005,239
  6. Step 6: Final answer
    x = 368,439,838.58

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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.