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Finding the Fourth Proportional to 6,615,724, 9,921,793.88 and 1,822,273.20

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Solution

The fourth proportional to 6,615,724, 9,921,793.88 and 1,822,273.20 is: 2,732,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615,724 : 9,921,793.88 = 1,822,273.20 : x
  2. Step 2: Convert to fraction form
    6,615,724/9,921,793.88 = 1,822,273.20/x
  3. Step 3: Cross multiply
    6,615,724x = 9,921,793.88 × 1,822,273.20
  4. Step 4: Simplify right side
    6,615,724x = 18,080,219,083,448.02
  5. Step 5: Solve for x
    x = 18,080,219,083,448.02/6,615,724
  6. Step 6: Final answer
    x = 2,732,916.17

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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.