Home / 820,172.30-1,230,258.45-707,979.20

Finding the Fourth Proportional to 820,172.30, 1,230,258.45 and 707,979.20

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Solution

The fourth proportional to 820,172.30, 1,230,258.45 and 707,979.20 is: 1,061,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,172.30 : 1,230,258.45 = 707,979.20 : x
  2. Step 2: Convert to fraction form
    820,172.30/1,230,258.45 = 707,979.20/x
  3. Step 3: Cross multiply
    820,172.30x = 1,230,258.45 × 707,979.20
  4. Step 4: Simplify right side
    820,172.30x = 870,997,393,224.24
  5. Step 5: Solve for x
    x = 870,997,393,224.24/820,172.30
  6. Step 6: Final answer
    x = 1,061,968.80

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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.