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Finding the Fourth Proportional to 780,265, 1,076,853.36 and 440,755.12

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Solution

The fourth proportional to 780,265, 1,076,853.36 and 440,755.12 is: 608,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,265 : 1,076,853.36 = 440,755.12 : x
  2. Step 2: Convert to fraction form
    780,265/1,076,853.36 = 440,755.12/x
  3. Step 3: Cross multiply
    780,265x = 1,076,853.36 × 440,755.12
  4. Step 4: Simplify right side
    780,265x = 474,628,631,909.20
  5. Step 5: Solve for x
    x = 474,628,631,909.20/780,265
  6. Step 6: Final answer
    x = 608,291.58

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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.