Home / 780,122.53-1,076,590.40-440,590.78

Finding the Fourth Proportional to 780,122.53, 1,076,590.40 and 440,590.78

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Solution

The fourth proportional to 780,122.53, 1,076,590.40 and 440,590.78 is: 608,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,122.53 : 1,076,590.40 = 440,590.78 : x
  2. Step 2: Convert to fraction form
    780,122.53/1,076,590.40 = 440,590.78/x
  3. Step 3: Cross multiply
    780,122.53x = 1,076,590.40 × 440,590.78
  4. Step 4: Simplify right side
    780,122.53x = 474,335,804,076.51
  5. Step 5: Solve for x
    x = 474,335,804,076.51/780,122.53
  6. Step 6: Final answer
    x = 608,027.31

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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.