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Finding the Fourth Proportional to 545,174.52, 816,911.52 and 345,072.20

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Solution

The fourth proportional to 545,174.52, 816,911.52 and 345,072.20 is: 517,070.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,174.52 : 816,911.52 = 345,072.20 : x
  2. Step 2: Convert to fraction form
    545,174.52/816,911.52 = 345,072.20/x
  3. Step 3: Cross multiply
    545,174.52x = 816,911.52 × 345,072.20
  4. Step 4: Simplify right side
    545,174.52x = 281,893,455,411.74
  5. Step 5: Solve for x
    x = 281,893,455,411.74/545,174.52
  6. Step 6: Final answer
    x = 517,070.12

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1.5x scale

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.