Home / 811,945.20-1,217,917.80-788,617.20

Finding the Fourth Proportional to 811,945.20, 1,217,917.80 and 788,617.20

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Solution

The fourth proportional to 811,945.20, 1,217,917.80 and 788,617.20 is: 1,182,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,945.20 : 1,217,917.80 = 788,617.20 : x
  2. Step 2: Convert to fraction form
    811,945.20/1,217,917.80 = 788,617.20/x
  3. Step 3: Cross multiply
    811,945.20x = 1,217,917.80 × 788,617.20
  4. Step 4: Simplify right side
    811,945.20x = 960,470,925,266.16
  5. Step 5: Solve for x
    x = 960,470,925,266.16/811,945.20
  6. Step 6: Final answer
    x = 1,182,925.80

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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.