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Finding the Fourth Proportional to 607,524.30, 911,286.45 and 489,426.30

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Solution

The fourth proportional to 607,524.30, 911,286.45 and 489,426.30 is: 734,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,524.30 : 911,286.45 = 489,426.30 : x
  2. Step 2: Convert to fraction form
    607,524.30/911,286.45 = 489,426.30/x
  3. Step 3: Cross multiply
    607,524.30x = 911,286.45 × 489,426.30
  4. Step 4: Simplify right side
    607,524.30x = 446,007,555,463.64
  5. Step 5: Solve for x
    x = 446,007,555,463.64/607,524.30
  6. Step 6: Final answer
    x = 734,139.45

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