Home / 426,384,057.10-639,576,085.65-419,581,612.30

Finding the Fourth Proportional to 426,384,057.10, 639,576,085.65 and 419,581,612.30

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Solution

The fourth proportional to 426,384,057.10, 639,576,085.65 and 419,581,612.30 is: 629,372,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,384,057.10 : 639,576,085.65 = 419,581,612.30 : x
  2. Step 2: Convert to fraction form
    426,384,057.10/639,576,085.65 = 419,581,612.30/x
  3. Step 3: Cross multiply
    426,384,057.10x = 639,576,085.65 × 419,581,612.30
  4. Step 4: Simplify right side
    426,384,057.10x = 268,354,365,205,549,888
  5. Step 5: Solve for x
    x = 268,354,365,205,549,888/426,384,057.10
  6. Step 6: Final answer
    x = 629,372,418.45

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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.