Home / 1,187,528.32-1,781,331.20-388,855.68

Finding the Fourth Proportional to 1,187,528.32, 1,781,331.20 and 388,855.68

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Solution

The fourth proportional to 1,187,528.32, 1,781,331.20 and 388,855.68 is: 583,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,528.32 : 1,781,331.20 = 388,855.68 : x
  2. Step 2: Convert to fraction form
    1,187,528.32/1,781,331.20 = 388,855.68/x
  3. Step 3: Cross multiply
    1,187,528.32x = 1,781,331.20 × 388,855.68
  4. Step 4: Simplify right side
    1,187,528.32x = 692,680,755,081.22
  5. Step 5: Solve for x
    x = 692,680,755,081.22/1,187,528.32
  6. Step 6: Final answer
    x = 583,296.20

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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.