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Finding the Fourth Proportional to 543,669.80, 815,614.05 and 455,533.70

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Solution

The fourth proportional to 543,669.80, 815,614.05 and 455,533.70 is: 683,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,669.80 : 815,614.05 = 455,533.70 : x
  2. Step 2: Convert to fraction form
    543,669.80/815,614.05 = 455,533.70/x
  3. Step 3: Cross multiply
    543,669.80x = 815,614.05 × 455,533.70
  4. Step 4: Simplify right side
    543,669.80x = 371,539,685,968.49
  5. Step 5: Solve for x
    x = 371,539,685,968.49/543,669.80
  6. Step 6: Final answer
    x = 683,392.17

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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.