Home / 1,091,288.18-1,505,740.16-661,673.90

Finding the Fourth Proportional to 1,091,288.18, 1,505,740.16 and 661,673.90

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Solution

The fourth proportional to 1,091,288.18, 1,505,740.16 and 661,673.90 is: 912,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,288.18 : 1,505,740.16 = 661,673.90 : x
  2. Step 2: Convert to fraction form
    1,091,288.18/1,505,740.16 = 661,673.90/x
  3. Step 3: Cross multiply
    1,091,288.18x = 1,505,740.16 × 661,673.90
  4. Step 4: Simplify right side
    1,091,288.18x = 996,308,964,053.82
  5. Step 5: Solve for x
    x = 996,308,964,053.82/1,091,288.18
  6. Step 6: Final answer
    x = 912,965.96

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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.