Home / 829,985.15-1,142,967.58-721,039.75

Finding the Fourth Proportional to 829,985.15, 1,142,967.58 and 721,039.75

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Solution

The fourth proportional to 829,985.15, 1,142,967.58 and 721,039.75 is: 992,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,985.15 : 1,142,967.58 = 721,039.75 : x
  2. Step 2: Convert to fraction form
    829,985.15/1,142,967.58 = 721,039.75/x
  3. Step 3: Cross multiply
    829,985.15x = 1,142,967.58 × 721,039.75
  4. Step 4: Simplify right side
    829,985.15x = 824,125,053,481.29
  5. Step 5: Solve for x
    x = 824,125,053,481.29/829,985.15
  6. Step 6: Final answer
    x = 992,939.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.