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Finding the Fourth Proportional to 887,989.64, 1,225,400.82 and 485,573

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Solution

The fourth proportional to 887,989.64, 1,225,400.82 and 485,573 is: 670,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,989.64 : 1,225,400.82 = 485,573 : x
  2. Step 2: Convert to fraction form
    887,989.64/1,225,400.82 = 485,573/x
  3. Step 3: Cross multiply
    887,989.64x = 1,225,400.82 × 485,573
  4. Step 4: Simplify right side
    887,989.64x = 595,021,552,369.86
  5. Step 5: Solve for x
    x = 595,021,552,369.86/887,989.64
  6. Step 6: Final answer
    x = 670,077.13

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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.