Home / 3,280,905.60-4,921,865.28-1,387,657.60

Finding the Fourth Proportional to 3,280,905.60, 4,921,865.28 and 1,387,657.60

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Solution

The fourth proportional to 3,280,905.60, 4,921,865.28 and 1,387,657.60 is: 2,081,700.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,905.60 : 4,921,865.28 = 1,387,657.60 : x
  2. Step 2: Convert to fraction form
    3,280,905.60/4,921,865.28 = 1,387,657.60/x
  3. Step 3: Cross multiply
    3,280,905.60x = 4,921,865.28 × 1,387,657.60
  4. Step 4: Simplify right side
    3,280,905.60x = 6,829,863,761,968.13
  5. Step 5: Solve for x
    x = 6,829,863,761,968.13/3,280,905.60
  6. Step 6: Final answer
    x = 2,081,700.78

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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.