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Finding the Fourth Proportional to 887,889.76, 1,224,988.04 and 505,645.90

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Solution

The fourth proportional to 887,889.76, 1,224,988.04 and 505,645.90 is: 697,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,889.76 : 1,224,988.04 = 505,645.90 : x
  2. Step 2: Convert to fraction form
    887,889.76/1,224,988.04 = 505,645.90/x
  3. Step 3: Cross multiply
    887,889.76x = 1,224,988.04 × 505,645.90
  4. Step 4: Simplify right side
    887,889.76x = 619,410,178,176.68
  5. Step 5: Solve for x
    x = 619,410,178,176.68/887,889.76
  6. Step 6: Final answer
    x = 697,620.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.