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Finding the Fourth Proportional to 617,140.40, 925,710.60 and 492,724.40

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Solution

The fourth proportional to 617,140.40, 925,710.60 and 492,724.40 is: 739,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,140.40 : 925,710.60 = 492,724.40 : x
  2. Step 2: Convert to fraction form
    617,140.40/925,710.60 = 492,724.40/x
  3. Step 3: Cross multiply
    617,140.40x = 925,710.60 × 492,724.40
  4. Step 4: Simplify right side
    617,140.40x = 456,120,199,958.64
  5. Step 5: Solve for x
    x = 456,120,199,958.64/617,140.40
  6. Step 6: Final answer
    x = 739,086.60

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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.