Home / 642,788.65-964,192.70-243,322.17

Finding the Fourth Proportional to 642,788.65, 964,192.70 and 243,322.17

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Solution

The fourth proportional to 642,788.65, 964,192.70 and 243,322.17 is: 364,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,788.65 : 964,192.70 = 243,322.17 : x
  2. Step 2: Convert to fraction form
    642,788.65/964,192.70 = 243,322.17/x
  3. Step 3: Cross multiply
    642,788.65x = 964,192.70 × 243,322.17
  4. Step 4: Simplify right side
    642,788.65x = 234,609,460,062.16
  5. Step 5: Solve for x
    x = 234,609,460,062.16/642,788.65
  6. Step 6: Final answer
    x = 364,986.94

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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.