Home / 378,756,257.40-523,044,620.40-358,121,878.38

Finding the Fourth Proportional to 378,756,257.40, 523,044,620.40 and 358,121,878.38

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Solution

The fourth proportional to 378,756,257.40, 523,044,620.40 and 358,121,878.38 is: 494,549,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,756,257.40 : 523,044,620.40 = 358,121,878.38 : x
  2. Step 2: Convert to fraction form
    378,756,257.40/523,044,620.40 = 358,121,878.38/x
  3. Step 3: Cross multiply
    378,756,257.40x = 523,044,620.40 × 358,121,878.38
  4. Step 4: Simplify right side
    378,756,257.40x = 187,313,721,934,202,048
  5. Step 5: Solve for x
    x = 187,313,721,934,202,048/378,756,257.40
  6. Step 6: Final answer
    x = 494,549,511.13

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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.