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Finding the Fourth Proportional to 664,007.20, 997,047.60 and 384,071.20

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Solution

The fourth proportional to 664,007.20, 997,047.60 and 384,071.20 is: 576,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,007.20 : 997,047.60 = 384,071.20 : x
  2. Step 2: Convert to fraction form
    664,007.20/997,047.60 = 384,071.20/x
  3. Step 3: Cross multiply
    664,007.20x = 997,047.60 × 384,071.20
  4. Step 4: Simplify right side
    664,007.20x = 382,937,268,189.12
  5. Step 5: Solve for x
    x = 382,937,268,189.12/664,007.20
  6. Step 6: Final answer
    x = 576,706.50

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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.