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Finding the Fourth Proportional to 887,769, 1,225,125.54 and 485,361

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Solution

The fourth proportional to 887,769, 1,225,125.54 and 485,361 is: 669,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,769 : 1,225,125.54 = 485,361 : x
  2. Step 2: Convert to fraction form
    887,769/1,225,125.54 = 485,361/x
  3. Step 3: Cross multiply
    887,769x = 1,225,125.54 × 485,361
  4. Step 4: Simplify right side
    887,769x = 594,628,157,219.94
  5. Step 5: Solve for x
    x = 594,628,157,219.94/887,769
  6. Step 6: Final answer
    x = 669,800.54

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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.