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Finding the Fourth Proportional to 606,604.20, 909,906.30 and 555,428.40

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Solution

The fourth proportional to 606,604.20, 909,906.30 and 555,428.40 is: 833,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,604.20 : 909,906.30 = 555,428.40 : x
  2. Step 2: Convert to fraction form
    606,604.20/909,906.30 = 555,428.40/x
  3. Step 3: Cross multiply
    606,604.20x = 909,906.30 × 555,428.40
  4. Step 4: Simplify right side
    606,604.20x = 505,387,800,358.92
  5. Step 5: Solve for x
    x = 505,387,800,358.92/606,604.20
  6. Step 6: Final answer
    x = 833,142.60

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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.