Home / 1,272,002.20-1,907,420.10-561,664.60

Finding the Fourth Proportional to 1,272,002.20, 1,907,420.10 and 561,664.60

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Solution

The fourth proportional to 1,272,002.20, 1,907,420.10 and 561,664.60 is: 842,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,002.20 : 1,907,420.10 = 561,664.60 : x
  2. Step 2: Convert to fraction form
    1,272,002.20/1,907,420.10 = 561,664.60/x
  3. Step 3: Cross multiply
    1,272,002.20x = 1,907,420.10 × 561,664.60
  4. Step 4: Simplify right side
    1,272,002.20x = 1,071,330,347,498.46
  5. Step 5: Solve for x
    x = 1,071,330,347,498.46/1,272,002.20
  6. Step 6: Final answer
    x = 842,239.38

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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.