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Finding the Fourth Proportional to 510,011.78, 703,794.05 and 280,554.51

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Solution

The fourth proportional to 510,011.78, 703,794.05 and 280,554.51 is: 387,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,011.78 : 703,794.05 = 280,554.51 : x
  2. Step 2: Convert to fraction form
    510,011.78/703,794.05 = 280,554.51/x
  3. Step 3: Cross multiply
    510,011.78x = 703,794.05 × 280,554.51
  4. Step 4: Simplify right side
    510,011.78x = 197,452,594,555.98
  5. Step 5: Solve for x
    x = 197,452,594,555.98/510,011.78
  6. Step 6: Final answer
    x = 387,153.01

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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.