Home / 426,060,002.80-639,090,004.20-339,966,560.80

Finding the Fourth Proportional to 426,060,002.80, 639,090,004.20 and 339,966,560.80

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Solution

The fourth proportional to 426,060,002.80, 639,090,004.20 and 339,966,560.80 is: 509,949,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,060,002.80 : 639,090,004.20 = 339,966,560.80 : x
  2. Step 2: Convert to fraction form
    426,060,002.80/639,090,004.20 = 339,966,560.80/x
  3. Step 3: Cross multiply
    426,060,002.80x = 639,090,004.20 × 339,966,560.80
  4. Step 4: Simplify right side
    426,060,002.80x = 217,269,230,769,531,584
  5. Step 5: Solve for x
    x = 217,269,230,769,531,584/426,060,002.80
  6. Step 6: Final answer
    x = 509,949,841.20

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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.