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Finding the Fourth Proportional to 887,759, 1,225,156.50 and 505,712.60

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Solution

The fourth proportional to 887,759, 1,225,156.50 and 505,712.60 is: 697,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,759 : 1,225,156.50 = 505,712.60 : x
  2. Step 2: Convert to fraction form
    887,759/1,225,156.50 = 505,712.60/x
  3. Step 3: Cross multiply
    887,759x = 1,225,156.50 × 505,712.60
  4. Step 4: Simplify right side
    887,759x = 619,577,079,021.90
  5. Step 5: Solve for x
    x = 619,577,079,021.90/887,759
  6. Step 6: Final answer
    x = 697,911.35

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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.