Home / 5,430,812.42-7,493,688.78-3,138,530.78

Finding the Fourth Proportional to 5,430,812.42, 7,493,688.78 and 3,138,530.78

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Solution

The fourth proportional to 5,430,812.42, 7,493,688.78 and 3,138,530.78 is: 4,330,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430,812.42 : 7,493,688.78 = 3,138,530.78 : x
  2. Step 2: Convert to fraction form
    5,430,812.42/7,493,688.78 = 3,138,530.78/x
  3. Step 3: Cross multiply
    5,430,812.42x = 7,493,688.78 × 3,138,530.78
  4. Step 4: Simplify right side
    5,430,812.42x = 23,519,172,891,770.65
  5. Step 5: Solve for x
    x = 23,519,172,891,770.65/5,430,812.42
  6. Step 6: Final answer
    x = 4,330,691.45

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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.