Home / 698,935,999.20-1,048,403,998.80-426,838,207.20

Finding the Fourth Proportional to 698,935,999.20, 1,048,403,998.80 and 426,838,207.20

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Solution

The fourth proportional to 698,935,999.20, 1,048,403,998.80 and 426,838,207.20 is: 640,257,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,935,999.20 : 1,048,403,998.80 = 426,838,207.20 : x
  2. Step 2: Convert to fraction form
    698,935,999.20/1,048,403,998.80 = 426,838,207.20/x
  3. Step 3: Cross multiply
    698,935,999.20x = 1,048,403,998.80 × 426,838,207.20
  4. Step 4: Simplify right side
    698,935,999.20x = 447,498,883,269,102,912
  5. Step 5: Solve for x
    x = 447,498,883,269,102,912/698,935,999.20
  6. Step 6: Final answer
    x = 640,257,310.80

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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.