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Finding the Fourth Proportional to 3,151,976, 4,727,964 and 788,072

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Solution

The fourth proportional to 3,151,976, 4,727,964 and 788,072 is: 1,182,108

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151,976 : 4,727,964 = 788,072 : x
  2. Step 2: Convert to fraction form
    3,151,976/4,727,964 = 788,072/x
  3. Step 3: Cross multiply
    3,151,976x = 4,727,964 × 788,072
  4. Step 4: Simplify right side
    3,151,976x = 3,725,976,045,408
  5. Step 5: Solve for x
    x = 3,725,976,045,408/3,151,976
  6. Step 6: Final answer
    x = 1,182,108

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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.