Home / 387,087,863.20-580,631,794.80-266,155,511.20

Finding the Fourth Proportional to 387,087,863.20, 580,631,794.80 and 266,155,511.20

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Solution

The fourth proportional to 387,087,863.20, 580,631,794.80 and 266,155,511.20 is: 399,233,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,087,863.20 : 580,631,794.80 = 266,155,511.20 : x
  2. Step 2: Convert to fraction form
    387,087,863.20/580,631,794.80 = 266,155,511.20/x
  3. Step 3: Cross multiply
    387,087,863.20x = 580,631,794.80 × 266,155,511.20
  4. Step 4: Simplify right side
    387,087,863.20x = 154,538,352,163,967,488
  5. Step 5: Solve for x
    x = 154,538,352,163,967,488/387,087,863.20
  6. Step 6: Final answer
    x = 399,233,266.80

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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.