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Finding the Fourth Proportional to 577,070.80, 865,606.20 and 328,238.80

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Solution

The fourth proportional to 577,070.80, 865,606.20 and 328,238.80 is: 492,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,070.80 : 865,606.20 = 328,238.80 : x
  2. Step 2: Convert to fraction form
    577,070.80/865,606.20 = 328,238.80/x
  3. Step 3: Cross multiply
    577,070.80x = 865,606.20 × 328,238.80
  4. Step 4: Simplify right side
    577,070.80x = 284,125,540,360.56
  5. Step 5: Solve for x
    x = 284,125,540,360.56/577,070.80
  6. Step 6: Final answer
    x = 492,358.20

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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.