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Finding the Fourth Proportional to 689,561.79, 950,989.59 and 482,724.24

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Solution

The fourth proportional to 689,561.79, 950,989.59 and 482,724.24 is: 665,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,561.79 : 950,989.59 = 482,724.24 : x
  2. Step 2: Convert to fraction form
    689,561.79/950,989.59 = 482,724.24/x
  3. Step 3: Cross multiply
    689,561.79x = 950,989.59 × 482,724.24
  4. Step 4: Simplify right side
    689,561.79x = 459,065,727,080.66
  5. Step 5: Solve for x
    x = 459,065,727,080.66/689,561.79
  6. Step 6: Final answer
    x = 665,735.45

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Half scale
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Double scale
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Similar ratio
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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.