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Finding the Fourth Proportional to 585,905.40, 878,858.10 and 484,428.60

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Solution

The fourth proportional to 585,905.40, 878,858.10 and 484,428.60 is: 726,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,905.40 : 878,858.10 = 484,428.60 : x
  2. Step 2: Convert to fraction form
    585,905.40/878,858.10 = 484,428.60/x
  3. Step 3: Cross multiply
    585,905.40x = 878,858.10 × 484,428.60
  4. Step 4: Simplify right side
    585,905.40x = 425,743,998,981.66
  5. Step 5: Solve for x
    x = 425,743,998,981.66/585,905.40
  6. Step 6: Final answer
    x = 726,642.90

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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.