Home / 688,359.75-949,936.46-386,553.75

Finding the Fourth Proportional to 688,359.75, 949,936.46 and 386,553.75

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Solution

The fourth proportional to 688,359.75, 949,936.46 and 386,553.75 is: 533,444.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,359.75 : 949,936.46 = 386,553.75 : x
  2. Step 2: Convert to fraction form
    688,359.75/949,936.46 = 386,553.75/x
  3. Step 3: Cross multiply
    688,359.75x = 949,936.46 × 386,553.75
  4. Step 4: Simplify right side
    688,359.75x = 367,201,498,941.96
  5. Step 5: Solve for x
    x = 367,201,498,941.96/688,359.75
  6. Step 6: Final answer
    x = 533,444.18

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1.5x scale

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.