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Finding the Fourth Proportional to 869,892.60, 1,304,838.90 and 617,950.20

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Solution

The fourth proportional to 869,892.60, 1,304,838.90 and 617,950.20 is: 926,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,892.60 : 1,304,838.90 = 617,950.20 : x
  2. Step 2: Convert to fraction form
    869,892.60/1,304,838.90 = 617,950.20/x
  3. Step 3: Cross multiply
    869,892.60x = 1,304,838.90 × 617,950.20
  4. Step 4: Simplify right side
    869,892.60x = 806,325,459,222.78
  5. Step 5: Solve for x
    x = 806,325,459,222.78/869,892.60
  6. Step 6: Final answer
    x = 926,925.30

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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.