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Finding the Fourth Proportional to 851,485, 1,277,227.50 and 346,320.80

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Solution

The fourth proportional to 851,485, 1,277,227.50 and 346,320.80 is: 519,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,485 : 1,277,227.50 = 346,320.80 : x
  2. Step 2: Convert to fraction form
    851,485/1,277,227.50 = 346,320.80/x
  3. Step 3: Cross multiply
    851,485x = 1,277,227.50 × 346,320.80
  4. Step 4: Simplify right side
    851,485x = 442,330,449,582
  5. Step 5: Solve for x
    x = 442,330,449,582/851,485
  6. Step 6: Final answer
    x = 519,481.20

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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.