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Finding the Fourth Proportional to 506,529.60, 759,794.40 and 388,431.60

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Solution

The fourth proportional to 506,529.60, 759,794.40 and 388,431.60 is: 582,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,529.60 : 759,794.40 = 388,431.60 : x
  2. Step 2: Convert to fraction form
    506,529.60/759,794.40 = 388,431.60/x
  3. Step 3: Cross multiply
    506,529.60x = 759,794.40 × 388,431.60
  4. Step 4: Simplify right side
    506,529.60x = 295,128,154,463.04
  5. Step 5: Solve for x
    x = 295,128,154,463.04/506,529.60
  6. Step 6: Final answer
    x = 582,647.40

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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.