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Finding the Fourth Proportional to 879,663.20, 1,234,016.80 and 879,663.20

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Solution

The fourth proportional to 879,663.20, 1,234,016.80 and 879,663.20 is: 1,234,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,663.20 : 1,234,016.80 = 879,663.20 : x
  2. Step 2: Convert to fraction form
    879,663.20/1,234,016.80 = 879,663.20/x
  3. Step 3: Cross multiply
    879,663.20x = 1,234,016.80 × 879,663.20
  4. Step 4: Simplify right side
    879,663.20x = 1,085,519,167,141.76
  5. Step 5: Solve for x
    x = 1,085,519,167,141.76/879,663.20
  6. Step 6: Final answer
    x = 1,234,016.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.