Home / 780,276-1,076,868.54-440,766.12

Finding the Fourth Proportional to 780,276, 1,076,868.54 and 440,766.12

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Solution

The fourth proportional to 780,276, 1,076,868.54 and 440,766.12 is: 608,306.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,276 : 1,076,868.54 = 440,766.12 : x
  2. Step 2: Convert to fraction form
    780,276/1,076,868.54 = 440,766.12/x
  3. Step 3: Cross multiply
    780,276x = 1,076,868.54 × 440,766.12
  4. Step 4: Simplify right side
    780,276x = 474,647,168,125.87
  5. Step 5: Solve for x
    x = 474,647,168,125.87/780,276
  6. Step 6: Final answer
    x = 608,306.76

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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.