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Finding the Fourth Proportional to 648,608.04, 972,963.90 and 227,978.28

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Solution

The fourth proportional to 648,608.04, 972,963.90 and 227,978.28 is: 341,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,608.04 : 972,963.90 = 227,978.28 : x
  2. Step 2: Convert to fraction form
    648,608.04/972,963.90 = 227,978.28/x
  3. Step 3: Cross multiply
    648,608.04x = 972,963.90 × 227,978.28
  4. Step 4: Simplify right side
    648,608.04x = 221,814,636,424.09
  5. Step 5: Solve for x
    x = 221,814,636,424.09/648,608.04
  6. Step 6: Final answer
    x = 341,985.64

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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.