Home / 718,812.20-1,076,906.10-438,001.40

Finding the Fourth Proportional to 718,812.20, 1,076,906.10 and 438,001.40

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Solution

The fourth proportional to 718,812.20, 1,076,906.10 and 438,001.40 is: 656,202.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,812.20 : 1,076,906.10 = 438,001.40 : x
  2. Step 2: Convert to fraction form
    718,812.20/1,076,906.10 = 438,001.40/x
  3. Step 3: Cross multiply
    718,812.20x = 1,076,906.10 × 438,001.40
  4. Step 4: Simplify right side
    718,812.20x = 471,686,379,468.54
  5. Step 5: Solve for x
    x = 471,686,379,468.54/718,812.20
  6. Step 6: Final answer
    x = 656,202.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.