Home / 490,077,309.40-735,115,964.10-379,112,428.60

Finding the Fourth Proportional to 490,077,309.40, 735,115,964.10 and 379,112,428.60

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Solution

The fourth proportional to 490,077,309.40, 735,115,964.10 and 379,112,428.60 is: 568,668,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,077,309.40 : 735,115,964.10 = 379,112,428.60 : x
  2. Step 2: Convert to fraction form
    490,077,309.40/735,115,964.10 = 379,112,428.60/x
  3. Step 3: Cross multiply
    490,077,309.40x = 735,115,964.10 × 379,112,428.60
  4. Step 4: Simplify right side
    490,077,309.40x = 278,691,598,452,581,440
  5. Step 5: Solve for x
    x = 278,691,598,452,581,440/490,077,309.40
  6. Step 6: Final answer
    x = 568,668,642.90

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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.