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Finding the Fourth Proportional to 660,410.70, 990,616.05 and 344,794.20

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Solution

The fourth proportional to 660,410.70, 990,616.05 and 344,794.20 is: 517,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,410.70 : 990,616.05 = 344,794.20 : x
  2. Step 2: Convert to fraction form
    660,410.70/990,616.05 = 344,794.20/x
  3. Step 3: Cross multiply
    660,410.70x = 990,616.05 × 344,794.20
  4. Step 4: Simplify right side
    660,410.70x = 341,558,668,466.91
  5. Step 5: Solve for x
    x = 341,558,668,466.91/660,410.70
  6. Step 6: Final answer
    x = 517,191.30

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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.