Home / 668,115,938.54-1,000,988,203.88-279,082,624.52

Finding the Fourth Proportional to 668,115,938.54, 1,000,988,203.88 and 279,082,624.52

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Solution

The fourth proportional to 668,115,938.54, 1,000,988,203.88 and 279,082,624.52 is: 418,128,649.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,115,938.54 : 1,000,988,203.88 = 279,082,624.52 : x
  2. Step 2: Convert to fraction form
    668,115,938.54/1,000,988,203.88 = 279,082,624.52/x
  3. Step 3: Cross multiply
    668,115,938.54x = 1,000,988,203.88 × 279,082,624.52
  4. Step 4: Simplify right side
    668,115,938.54x = 279,358,415,052,391,232
  5. Step 5: Solve for x
    x = 279,358,415,052,391,232/668,115,938.54
  6. Step 6: Final answer
    x = 418,128,649.44

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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.