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Finding the Fourth Proportional to 617,854.40, 926,781.60 and 493,438.40

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Solution

The fourth proportional to 617,854.40, 926,781.60 and 493,438.40 is: 740,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,854.40 : 926,781.60 = 493,438.40 : x
  2. Step 2: Convert to fraction form
    617,854.40/926,781.60 = 493,438.40/x
  3. Step 3: Cross multiply
    617,854.40x = 926,781.60 × 493,438.40
  4. Step 4: Simplify right side
    617,854.40x = 457,309,629,853.44
  5. Step 5: Solve for x
    x = 457,309,629,853.44/617,854.40
  6. Step 6: Final answer
    x = 740,157.60

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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.