Home / 829,985.80-1,244,978.70-515,057.80

Finding the Fourth Proportional to 829,985.80, 1,244,978.70 and 515,057.80

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Solution

The fourth proportional to 829,985.80, 1,244,978.70 and 515,057.80 is: 772,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,985.80 : 1,244,978.70 = 515,057.80 : x
  2. Step 2: Convert to fraction form
    829,985.80/1,244,978.70 = 515,057.80/x
  3. Step 3: Cross multiply
    829,985.80x = 1,244,978.70 × 515,057.80
  4. Step 4: Simplify right side
    829,985.80x = 641,235,990,268.86
  5. Step 5: Solve for x
    x = 641,235,990,268.86/829,985.80
  6. Step 6: Final answer
    x = 772,586.70

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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.