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Finding the Fourth Proportional to 829,930.80, 1,242,927.90 and 829,930.80

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Solution

The fourth proportional to 829,930.80, 1,242,927.90 and 829,930.80 is: 1,242,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,930.80 : 1,242,927.90 = 829,930.80 : x
  2. Step 2: Convert to fraction form
    829,930.80/1,242,927.90 = 829,930.80/x
  3. Step 3: Cross multiply
    829,930.80x = 1,242,927.90 × 829,930.80
  4. Step 4: Simplify right side
    829,930.80x = 1,031,544,146,389.32
  5. Step 5: Solve for x
    x = 1,031,544,146,389.32/829,930.80
  6. Step 6: Final answer
    x = 1,242,927.90

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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.