Home / 827,135.10-1,239,062.40-728,501.40

Finding the Fourth Proportional to 827,135.10, 1,239,062.40 and 728,501.40

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Solution

The fourth proportional to 827,135.10, 1,239,062.40 and 728,501.40 is: 1,091,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,135.10 : 1,239,062.40 = 728,501.40 : x
  2. Step 2: Convert to fraction form
    827,135.10/1,239,062.40 = 728,501.40/x
  3. Step 3: Cross multiply
    827,135.10x = 1,239,062.40 × 728,501.40
  4. Step 4: Simplify right side
    827,135.10x = 902,658,693,087.36
  5. Step 5: Solve for x
    x = 902,658,693,087.36/827,135.10
  6. Step 6: Final answer
    x = 1,091,307.45

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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.