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Finding the Fourth Proportional to 556,396.46, 767,810.64 and 308,049.48

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Solution

The fourth proportional to 556,396.46, 767,810.64 and 308,049.48 is: 425,099.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,396.46 : 767,810.64 = 308,049.48 : x
  2. Step 2: Convert to fraction form
    556,396.46/767,810.64 = 308,049.48/x
  3. Step 3: Cross multiply
    556,396.46x = 767,810.64 × 308,049.48
  4. Step 4: Simplify right side
    556,396.46x = 236,523,669,545.65
  5. Step 5: Solve for x
    x = 236,523,669,545.65/556,396.46
  6. Step 6: Final answer
    x = 425,099.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.