Home / 780,345.78-1,076,964.60-440,835.90

Finding the Fourth Proportional to 780,345.78, 1,076,964.60 and 440,835.90

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Solution

The fourth proportional to 780,345.78, 1,076,964.60 and 440,835.90 is: 608,402.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,345.78 : 1,076,964.60 = 440,835.90 : x
  2. Step 2: Convert to fraction form
    780,345.78/1,076,964.60 = 440,835.90/x
  3. Step 3: Cross multiply
    780,345.78x = 1,076,964.60 × 440,835.90
  4. Step 4: Simplify right side
    780,345.78x = 474,764,658,709.14
  5. Step 5: Solve for x
    x = 474,764,658,709.14/780,345.78
  6. Step 6: Final answer
    x = 608,402.93

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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.