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Finding the Fourth Proportional to 459,794.70, 689,692.05 and 409,056.30

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Solution

The fourth proportional to 459,794.70, 689,692.05 and 409,056.30 is: 613,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,794.70 : 689,692.05 = 409,056.30 : x
  2. Step 2: Convert to fraction form
    459,794.70/689,692.05 = 409,056.30/x
  3. Step 3: Cross multiply
    459,794.70x = 689,692.05 × 409,056.30
  4. Step 4: Simplify right side
    459,794.70x = 282,122,878,112.42
  5. Step 5: Solve for x
    x = 282,122,878,112.42/459,794.70
  6. Step 6: Final answer
    x = 613,584.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.