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Finding the Fourth Proportional to 851,555.90, 1,275,887.90 and 513,887.01

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Solution

The fourth proportional to 851,555.90, 1,275,887.90 and 513,887.01 is: 769,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,555.90 : 1,275,887.90 = 513,887.01 : x
  2. Step 2: Convert to fraction form
    851,555.90/1,275,887.90 = 513,887.01/x
  3. Step 3: Cross multiply
    851,555.90x = 1,275,887.90 × 513,887.01
  4. Step 4: Simplify right side
    851,555.90x = 655,662,215,456.74
  5. Step 5: Solve for x
    x = 655,662,215,456.74/851,555.90
  6. Step 6: Final answer
    x = 769,957.93

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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.