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Finding the Fourth Proportional to 669,906.30, 1,004,859.45 and 606,920.70

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Solution

The fourth proportional to 669,906.30, 1,004,859.45 and 606,920.70 is: 910,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,906.30 : 1,004,859.45 = 606,920.70 : x
  2. Step 2: Convert to fraction form
    669,906.30/1,004,859.45 = 606,920.70/x
  3. Step 3: Cross multiply
    669,906.30x = 1,004,859.45 × 606,920.70
  4. Step 4: Simplify right side
    669,906.30x = 609,870,000,795.62
  5. Step 5: Solve for x
    x = 609,870,000,795.62/669,906.30
  6. Step 6: Final answer
    x = 910,381.05

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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.