Home / 7,285,129.20-10,920,695.40-5,664,999.60

Finding the Fourth Proportional to 7,285,129.20, 10,920,695.40 and 5,664,999.60

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Solution

The fourth proportional to 7,285,129.20, 10,920,695.40 and 5,664,999.60 is: 8,492,057.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285,129.20 : 10,920,695.40 = 5,664,999.60 : x
  2. Step 2: Convert to fraction form
    7,285,129.20/10,920,695.40 = 5,664,999.60/x
  3. Step 3: Cross multiply
    7,285,129.20x = 10,920,695.40 × 5,664,999.60
  4. Step 4: Simplify right side
    7,285,129.20x = 61,865,735,072,721.84
  5. Step 5: Solve for x
    x = 61,865,735,072,721.84/7,285,129.20
  6. Step 6: Final answer
    x = 8,492,057.36

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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.