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Finding the Fourth Proportional to 510,913.45, 705,007.63 and 314,648.88

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Solution

The fourth proportional to 510,913.45, 705,007.63 and 314,648.88 is: 434,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,913.45 : 705,007.63 = 314,648.88 : x
  2. Step 2: Convert to fraction form
    510,913.45/705,007.63 = 314,648.88/x
  3. Step 3: Cross multiply
    510,913.45x = 705,007.63 × 314,648.88
  4. Step 4: Simplify right side
    510,913.45x = 221,829,856,072.67
  5. Step 5: Solve for x
    x = 221,829,856,072.67/510,913.45
  6. Step 6: Final answer
    x = 434,182.85

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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.