Home / 1,076,730.92-1,615,842.02-428,240.60

Finding the Fourth Proportional to 1,076,730.92, 1,615,842.02 and 428,240.60

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Solution

The fourth proportional to 1,076,730.92, 1,615,842.02 and 428,240.60 is: 642,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,730.92 : 1,615,842.02 = 428,240.60 : x
  2. Step 2: Convert to fraction form
    1,076,730.92/1,615,842.02 = 428,240.60/x
  3. Step 3: Cross multiply
    1,076,730.92x = 1,615,842.02 × 428,240.60
  4. Step 4: Simplify right side
    1,076,730.92x = 691,969,156,150.01
  5. Step 5: Solve for x
    x = 691,969,156,150.01/1,076,730.92
  6. Step 6: Final answer
    x = 642,657.46

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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.