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Finding the Fourth Proportional to 887,732, 1,225,074.48 and 485,324

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Solution

The fourth proportional to 887,732, 1,225,074.48 and 485,324 is: 669,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,732 : 1,225,074.48 = 485,324 : x
  2. Step 2: Convert to fraction form
    887,732/1,225,074.48 = 485,324/x
  3. Step 3: Cross multiply
    887,732x = 1,225,074.48 × 485,324
  4. Step 4: Simplify right side
    887,732x = 594,558,046,931.52
  5. Step 5: Solve for x
    x = 594,558,046,931.52/887,732
  6. Step 6: Final answer
    x = 669,749.48

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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.