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Finding the Fourth Proportional to 1,179,146, 1,627,223.10 and 642,602

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Solution

The fourth proportional to 1,179,146, 1,627,223.10 and 642,602 is: 886,791.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,146 : 1,627,223.10 = 642,602 : x
  2. Step 2: Convert to fraction form
    1,179,146/1,627,223.10 = 642,602/x
  3. Step 3: Cross multiply
    1,179,146x = 1,627,223.10 × 642,602
  4. Step 4: Simplify right side
    1,179,146x = 1,045,656,818,506.20
  5. Step 5: Solve for x
    x = 1,045,656,818,506.20/1,179,146
  6. Step 6: Final answer
    x = 886,791.64

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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.