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Finding the Fourth Proportional to 1,179,148, 1,627,225.86 and 642,604

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Solution

The fourth proportional to 1,179,148, 1,627,225.86 and 642,604 is: 886,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,148 : 1,627,225.86 = 642,604 : x
  2. Step 2: Convert to fraction form
    1,179,148/1,627,225.86 = 642,604/x
  3. Step 3: Cross multiply
    1,179,148x = 1,627,225.86 × 642,604
  4. Step 4: Simplify right side
    1,179,148x = 1,045,661,846,539.44
  5. Step 5: Solve for x
    x = 1,045,661,846,539.44/1,179,148
  6. Step 6: Final answer
    x = 886,794.40

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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.