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Finding the Fourth Proportional to 576,079.29, 863,295.30 and 423,076.23

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Solution

The fourth proportional to 576,079.29, 863,295.30 and 423,076.23 is: 634,009.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,079.29 : 863,295.30 = 423,076.23 : x
  2. Step 2: Convert to fraction form
    576,079.29/863,295.30 = 423,076.23/x
  3. Step 3: Cross multiply
    576,079.29x = 863,295.30 × 423,076.23
  4. Step 4: Simplify right side
    576,079.29x = 365,239,720,900.72
  5. Step 5: Solve for x
    x = 365,239,720,900.72/576,079.29
  6. Step 6: Final answer
    x = 634,009.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.