Home / 780,253.78-1,076,837.79-440,743.90

Finding the Fourth Proportional to 780,253.78, 1,076,837.79 and 440,743.90

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Solution

The fourth proportional to 780,253.78, 1,076,837.79 and 440,743.90 is: 608,276.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,253.78 : 1,076,837.79 = 440,743.90 : x
  2. Step 2: Convert to fraction form
    780,253.78/1,076,837.79 = 440,743.90/x
  3. Step 3: Cross multiply
    780,253.78x = 1,076,837.79 × 440,743.90
  4. Step 4: Simplify right side
    780,253.78x = 474,609,687,231.98
  5. Step 5: Solve for x
    x = 474,609,687,231.98/780,253.78
  6. Step 6: Final answer
    x = 608,276.05

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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.