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Finding the Fourth Proportional to 717,908.80, 1,076,776.80 and 297,140.80

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Solution

The fourth proportional to 717,908.80, 1,076,776.80 and 297,140.80 is: 445,675.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,908.80 : 1,076,776.80 = 297,140.80 : x
  2. Step 2: Convert to fraction form
    717,908.80/1,076,776.80 = 297,140.80/x
  3. Step 3: Cross multiply
    717,908.80x = 1,076,776.80 × 297,140.80
  4. Step 4: Simplify right side
    717,908.80x = 319,954,319,773.44
  5. Step 5: Solve for x
    x = 319,954,319,773.44/717,908.80
  6. Step 6: Final answer
    x = 445,675.44

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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.