Home / 642,789.65-964,194.20-243,323.17

Finding the Fourth Proportional to 642,789.65, 964,194.20 and 243,323.17

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Solution

The fourth proportional to 642,789.65, 964,194.20 and 243,323.17 is: 364,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,789.65 : 964,194.20 = 243,323.17 : x
  2. Step 2: Convert to fraction form
    642,789.65/964,194.20 = 243,323.17/x
  3. Step 3: Cross multiply
    642,789.65x = 964,194.20 × 243,323.17
  4. Step 4: Simplify right side
    642,789.65x = 234,610,789,239.61
  5. Step 5: Solve for x
    x = 234,610,789,239.61/642,789.65
  6. Step 6: Final answer
    x = 364,988.44

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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.