Home / 688,280.43-949,839.44-386,485.23

Finding the Fourth Proportional to 688,280.43, 949,839.44 and 386,485.23

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Solution

The fourth proportional to 688,280.43, 949,839.44 and 386,485.23 is: 533,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,280.43 : 949,839.44 = 386,485.23 : x
  2. Step 2: Convert to fraction form
    688,280.43/949,839.44 = 386,485.23/x
  3. Step 3: Cross multiply
    688,280.43x = 949,839.44 × 386,485.23
  4. Step 4: Simplify right side
    688,280.43x = 367,098,912,499.05
  5. Step 5: Solve for x
    x = 367,098,912,499.05/688,280.43
  6. Step 6: Final answer
    x = 533,356.60

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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.