Home / 840,282,257.60-1,261,720,999.20-458,076,305.60

Finding the Fourth Proportional to 840,282,257.60, 1,261,720,999.20 and 458,076,305.60

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Solution

The fourth proportional to 840,282,257.60, 1,261,720,999.20 and 458,076,305.60 is: 687,821,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,282,257.60 : 1,261,720,999.20 = 458,076,305.60 : x
  2. Step 2: Convert to fraction form
    840,282,257.60/1,261,720,999.20 = 458,076,305.60/x
  3. Step 3: Cross multiply
    840,282,257.60x = 1,261,720,999.20 × 458,076,305.60
  4. Step 4: Simplify right side
    840,282,257.60x = 577,964,494,011,476,608
  5. Step 5: Solve for x
    x = 577,964,494,011,476,608/840,282,257.60
  6. Step 6: Final answer
    x = 687,821,846.51

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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.