Home / 508,404,960.80-762,607,441.20-139,939,200.80

Finding the Fourth Proportional to 508,404,960.80, 762,607,441.20 and 139,939,200.80

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Solution

The fourth proportional to 508,404,960.80, 762,607,441.20 and 139,939,200.80 is: 209,908,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,404,960.80 : 762,607,441.20 = 139,939,200.80 : x
  2. Step 2: Convert to fraction form
    508,404,960.80/762,607,441.20 = 139,939,200.80/x
  3. Step 3: Cross multiply
    508,404,960.80x = 762,607,441.20 × 139,939,200.80
  4. Step 4: Simplify right side
    508,404,960.80x = 106,718,675,845,661,008
  5. Step 5: Solve for x
    x = 106,718,675,845,661,008/508,404,960.80
  6. Step 6: Final answer
    x = 209,908,801.20

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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.