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Finding the Fourth Proportional to 1,315,491.02, 1,815,377.57 and 711,879.02

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Solution

The fourth proportional to 1,315,491.02, 1,815,377.57 and 711,879.02 is: 982,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,491.02 : 1,815,377.57 = 711,879.02 : x
  2. Step 2: Convert to fraction form
    1,315,491.02/1,815,377.57 = 711,879.02/x
  3. Step 3: Cross multiply
    1,315,491.02x = 1,815,377.57 × 711,879.02
  4. Step 4: Simplify right side
    1,315,491.02x = 1,292,329,205,461.58
  5. Step 5: Solve for x
    x = 1,292,329,205,461.58/1,315,491.02
  6. Step 6: Final answer
    x = 982,393.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.