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Finding the Fourth Proportional to 643,285.20, 964,927.80 and 601,294.80

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Solution

The fourth proportional to 643,285.20, 964,927.80 and 601,294.80 is: 901,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,285.20 : 964,927.80 = 601,294.80 : x
  2. Step 2: Convert to fraction form
    643,285.20/964,927.80 = 601,294.80/x
  3. Step 3: Cross multiply
    643,285.20x = 964,927.80 × 601,294.80
  4. Step 4: Simplify right side
    643,285.20x = 580,206,068,515.44
  5. Step 5: Solve for x
    x = 580,206,068,515.44/643,285.20
  6. Step 6: Final answer
    x = 901,942.20

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Double scale
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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.