Home / 688,072.28-949,533.18-386,264.12

Finding the Fourth Proportional to 688,072.28, 949,533.18 and 386,264.12

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Solution

The fourth proportional to 688,072.28, 949,533.18 and 386,264.12 is: 533,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,072.28 : 949,533.18 = 386,264.12 : x
  2. Step 2: Convert to fraction form
    688,072.28/949,533.18 = 386,264.12/x
  3. Step 3: Cross multiply
    688,072.28x = 949,533.18 × 386,264.12
  4. Step 4: Simplify right side
    688,072.28x = 366,770,598,183.50
  5. Step 5: Solve for x
    x = 366,770,598,183.50/688,072.28
  6. Step 6: Final answer
    x = 533,040.80

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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.