Home / 826,849.81-1,142,015.72-661,852.20

Finding the Fourth Proportional to 826,849.81, 1,142,015.72 and 661,852.20

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Solution

The fourth proportional to 826,849.81, 1,142,015.72 and 661,852.20 is: 914,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,849.81 : 1,142,015.72 = 661,852.20 : x
  2. Step 2: Convert to fraction form
    826,849.81/1,142,015.72 = 661,852.20/x
  3. Step 3: Cross multiply
    826,849.81x = 1,142,015.72 × 661,852.20
  4. Step 4: Simplify right side
    826,849.81x = 755,845,616,716.58
  5. Step 5: Solve for x
    x = 755,845,616,716.58/826,849.81
  6. Step 6: Final answer
    x = 914,126.86

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1.5x scale

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.