Home / 1,187,765.16-1,781,278.38-388,868.64

Finding the Fourth Proportional to 1,187,765.16, 1,781,278.38 and 388,868.64

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Solution

The fourth proportional to 1,187,765.16, 1,781,278.38 and 388,868.64 is: 583,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,765.16 : 1,781,278.38 = 388,868.64 : x
  2. Step 2: Convert to fraction form
    1,187,765.16/1,781,278.38 = 388,868.64/x
  3. Step 3: Cross multiply
    1,187,765.16x = 1,781,278.38 × 388,868.64
  4. Step 4: Simplify right side
    1,187,765.16x = 692,683,301,092.00
  5. Step 5: Solve for x
    x = 692,683,301,092.00/1,187,765.16
  6. Step 6: Final answer
    x = 583,182.03

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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.