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Finding the Fourth Proportional to 531,924.84, 734,120.82 and 388,613.16

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Solution

The fourth proportional to 531,924.84, 734,120.82 and 388,613.16 is: 536,333.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,924.84 : 734,120.82 = 388,613.16 : x
  2. Step 2: Convert to fraction form
    531,924.84/734,120.82 = 388,613.16/x
  3. Step 3: Cross multiply
    531,924.84x = 734,120.82 × 388,613.16
  4. Step 4: Simplify right side
    531,924.84x = 285,289,011,681.99
  5. Step 5: Solve for x
    x = 285,289,011,681.99/531,924.84
  6. Step 6: Final answer
    x = 536,333.31

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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.