Home / 490,514,709.17-735,166,199.07-420,938,453.45

Finding the Fourth Proportional to 490,514,709.17, 735,166,199.07 and 420,938,453.45

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Solution

The fourth proportional to 490,514,709.17, 735,166,199.07 and 420,938,453.45 is: 630,887,753.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,514,709.17 : 735,166,199.07 = 420,938,453.45 : x
  2. Step 2: Convert to fraction form
    490,514,709.17/735,166,199.07 = 420,938,453.45/x
  3. Step 3: Cross multiply
    490,514,709.17x = 735,166,199.07 × 420,938,453.45
  4. Step 4: Simplify right side
    490,514,709.17x = 309,459,722,861,564,800
  5. Step 5: Solve for x
    x = 309,459,722,861,564,800/490,514,709.17
  6. Step 6: Final answer
    x = 630,887,753.37

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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.