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Finding the Fourth Proportional to 922,117.88, 1,382,844 and 389,680.04

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Solution

The fourth proportional to 922,117.88, 1,382,844 and 389,680.04 is: 584,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,117.88 : 1,382,844 = 389,680.04 : x
  2. Step 2: Convert to fraction form
    922,117.88/1,382,844 = 389,680.04/x
  3. Step 3: Cross multiply
    922,117.88x = 1,382,844 × 389,680.04
  4. Step 4: Simplify right side
    922,117.88x = 538,866,705,233.76
  5. Step 5: Solve for x
    x = 538,866,705,233.76/922,117.88
  6. Step 6: Final answer
    x = 584,379.41

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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.