Home / 1,187,679.83-1,781,339.27-388,943.69

Finding the Fourth Proportional to 1,187,679.83, 1,781,339.27 and 388,943.69

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Solution

The fourth proportional to 1,187,679.83, 1,781,339.27 and 388,943.69 is: 583,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,679.83 : 1,781,339.27 = 388,943.69 : x
  2. Step 2: Convert to fraction form
    1,187,679.83/1,781,339.27 = 388,943.69/x
  3. Step 3: Cross multiply
    1,187,679.83x = 1,781,339.27 × 388,943.69
  4. Step 4: Simplify right side
    1,187,679.83x = 692,840,657,964.29
  5. Step 5: Solve for x
    x = 692,840,657,964.29/1,187,679.83
  6. Step 6: Final answer
    x = 583,356.43

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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.