Home / 518,078,809.70-777,118,214.55-211,203,635.30

Finding the Fourth Proportional to 518,078,809.70, 777,118,214.55 and 211,203,635.30

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Solution

The fourth proportional to 518,078,809.70, 777,118,214.55 and 211,203,635.30 is: 316,805,452.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,078,809.70 : 777,118,214.55 = 211,203,635.30 : x
  2. Step 2: Convert to fraction form
    518,078,809.70/777,118,214.55 = 211,203,635.30/x
  3. Step 3: Cross multiply
    518,078,809.70x = 777,118,214.55 × 211,203,635.30
  4. Step 4: Simplify right side
    518,078,809.70x = 164,130,191,970,805,344
  5. Step 5: Solve for x
    x = 164,130,191,970,805,344/518,078,809.70
  6. Step 6: Final answer
    x = 316,805,452.95

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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.