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Finding the Fourth Proportional to 1,260,897.22, 1,890,206.16 and 856,224.46

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Solution

The fourth proportional to 1,260,897.22, 1,890,206.16 and 856,224.46 is: 1,283,562.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,897.22 : 1,890,206.16 = 856,224.46 : x
  2. Step 2: Convert to fraction form
    1,260,897.22/1,890,206.16 = 856,224.46/x
  3. Step 3: Cross multiply
    1,260,897.22x = 1,890,206.16 × 856,224.46
  4. Step 4: Simplify right side
    1,260,897.22x = 1,618,440,748,634.67
  5. Step 5: Solve for x
    x = 1,618,440,748,634.67/1,260,897.22
  6. Step 6: Final answer
    x = 1,283,562.79

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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.