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Finding the Fourth Proportional to 717,707.69, 1,076,772.07 and 212,282

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Solution

The fourth proportional to 717,707.69, 1,076,772.07 and 212,282 is: 318,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,707.69 : 1,076,772.07 = 212,282 : x
  2. Step 2: Convert to fraction form
    717,707.69/1,076,772.07 = 212,282/x
  3. Step 3: Cross multiply
    717,707.69x = 1,076,772.07 × 212,282
  4. Step 4: Simplify right side
    717,707.69x = 228,579,328,563.74
  5. Step 5: Solve for x
    x = 228,579,328,563.74/717,707.69
  6. Step 6: Final answer
    x = 318,485.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.