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Finding the Fourth Proportional to 617,359.80, 926,039.70 and 262,385.40

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Solution

The fourth proportional to 617,359.80, 926,039.70 and 262,385.40 is: 393,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,359.80 : 926,039.70 = 262,385.40 : x
  2. Step 2: Convert to fraction form
    617,359.80/926,039.70 = 262,385.40/x
  3. Step 3: Cross multiply
    617,359.80x = 926,039.70 × 262,385.40
  4. Step 4: Simplify right side
    617,359.80x = 242,979,297,100.38
  5. Step 5: Solve for x
    x = 242,979,297,100.38/617,359.80
  6. Step 6: Final answer
    x = 393,578.10

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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.