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Finding the Fourth Proportional to 521,164.80, 783,417.60 and 484,185.60

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Solution

The fourth proportional to 521,164.80, 783,417.60 and 484,185.60 is: 727,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,164.80 : 783,417.60 = 484,185.60 : x
  2. Step 2: Convert to fraction form
    521,164.80/783,417.60 = 484,185.60/x
  3. Step 3: Cross multiply
    521,164.80x = 783,417.60 × 484,185.60
  4. Step 4: Simplify right side
    521,164.80x = 379,319,520,706.56
  5. Step 5: Solve for x
    x = 379,319,520,706.56/521,164.80
  6. Step 6: Final answer
    x = 727,830.28

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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.