Home / 1,191,686.40-1,785,196.80-716,961.60

Finding the Fourth Proportional to 1,191,686.40, 1,785,196.80 and 716,961.60

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Solution

The fourth proportional to 1,191,686.40, 1,785,196.80 and 716,961.60 is: 1,074,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,686.40 : 1,785,196.80 = 716,961.60 : x
  2. Step 2: Convert to fraction form
    1,191,686.40/1,785,196.80 = 716,961.60/x
  3. Step 3: Cross multiply
    1,191,686.40x = 1,785,196.80 × 716,961.60
  4. Step 4: Simplify right side
    1,191,686.40x = 1,279,917,554,042.88
  5. Step 5: Solve for x
    x = 1,279,917,554,042.88/1,191,686.40
  6. Step 6: Final answer
    x = 1,074,038.90

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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.