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Finding the Fourth Proportional to 617,908.40, 926,862.60 and 285,484.40

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Solution

The fourth proportional to 617,908.40, 926,862.60 and 285,484.40 is: 428,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,908.40 : 926,862.60 = 285,484.40 : x
  2. Step 2: Convert to fraction form
    617,908.40/926,862.60 = 285,484.40/x
  3. Step 3: Cross multiply
    617,908.40x = 926,862.60 × 285,484.40
  4. Step 4: Simplify right side
    617,908.40x = 264,604,813,243.44
  5. Step 5: Solve for x
    x = 264,604,813,243.44/617,908.40
  6. Step 6: Final answer
    x = 428,226.60

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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.