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Finding the Fourth Proportional to 665,269.70, 997,904.55 and 310,319.60

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Solution

The fourth proportional to 665,269.70, 997,904.55 and 310,319.60 is: 465,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,269.70 : 997,904.55 = 310,319.60 : x
  2. Step 2: Convert to fraction form
    665,269.70/997,904.55 = 310,319.60/x
  3. Step 3: Cross multiply
    665,269.70x = 997,904.55 × 310,319.60
  4. Step 4: Simplify right side
    665,269.70x = 309,669,340,794.18
  5. Step 5: Solve for x
    x = 309,669,340,794.18/665,269.70
  6. Step 6: Final answer
    x = 465,479.40

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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.