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Finding the Fourth Proportional to 617,812.20, 926,718.30 and 368,980.20

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Solution

The fourth proportional to 617,812.20, 926,718.30 and 368,980.20 is: 553,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,812.20 : 926,718.30 = 368,980.20 : x
  2. Step 2: Convert to fraction form
    617,812.20/926,718.30 = 368,980.20/x
  3. Step 3: Cross multiply
    617,812.20x = 926,718.30 × 368,980.20
  4. Step 4: Simplify right side
    617,812.20x = 341,940,703,677.66
  5. Step 5: Solve for x
    x = 341,940,703,677.66/617,812.20
  6. Step 6: Final answer
    x = 553,470.30

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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.