Home / 688,069.78-949,529.73-386,261.62

Finding the Fourth Proportional to 688,069.78, 949,529.73 and 386,261.62

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Solution

The fourth proportional to 688,069.78, 949,529.73 and 386,261.62 is: 533,037.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,069.78 : 949,529.73 = 386,261.62 : x
  2. Step 2: Convert to fraction form
    688,069.78/949,529.73 = 386,261.62/x
  3. Step 3: Cross multiply
    688,069.78x = 949,529.73 × 386,261.62
  4. Step 4: Simplify right side
    688,069.78x = 366,766,891,747.96
  5. Step 5: Solve for x
    x = 366,766,891,747.96/688,069.78
  6. Step 6: Final answer
    x = 533,037.35

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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.