Home / 780,363.78-1,076,989.44-440,853.90

Finding the Fourth Proportional to 780,363.78, 1,076,989.44 and 440,853.90

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Solution

The fourth proportional to 780,363.78, 1,076,989.44 and 440,853.90 is: 608,427.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,363.78 : 1,076,989.44 = 440,853.90 : x
  2. Step 2: Convert to fraction form
    780,363.78/1,076,989.44 = 440,853.90/x
  3. Step 3: Cross multiply
    780,363.78x = 1,076,989.44 × 440,853.90
  4. Step 4: Simplify right side
    780,363.78x = 474,794,994,882.82
  5. Step 5: Solve for x
    x = 474,794,994,882.82/780,363.78
  6. Step 6: Final answer
    x = 608,427.77

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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.