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Finding the Fourth Proportional to 659,627.40, 989,441.10 and 305,333.40

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Solution

The fourth proportional to 659,627.40, 989,441.10 and 305,333.40 is: 458,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,627.40 : 989,441.10 = 305,333.40 : x
  2. Step 2: Convert to fraction form
    659,627.40/989,441.10 = 305,333.40/x
  3. Step 3: Cross multiply
    659,627.40x = 989,441.10 × 305,333.40
  4. Step 4: Simplify right side
    659,627.40x = 302,109,415,162.74
  5. Step 5: Solve for x
    x = 302,109,415,162.74/659,627.40
  6. Step 6: Final answer
    x = 458,000.10

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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.