Home / 812,980.40-1,122,069.92-469,038.47

Finding the Fourth Proportional to 812,980.40, 1,122,069.92 and 469,038.47

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Solution

The fourth proportional to 812,980.40, 1,122,069.92 and 469,038.47 is: 647,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,980.40 : 1,122,069.92 = 469,038.47 : x
  2. Step 2: Convert to fraction form
    812,980.40/1,122,069.92 = 469,038.47/x
  3. Step 3: Cross multiply
    812,980.40x = 1,122,069.92 × 469,038.47
  4. Step 4: Simplify right side
    812,980.40x = 526,293,950,554.28
  5. Step 5: Solve for x
    x = 526,293,950,554.28/812,980.40
  6. Step 6: Final answer
    x = 647,363.64

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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.