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Finding the Fourth Proportional to 813,241, 1,122,275.20 and 450,670.82

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Solution

The fourth proportional to 813,241, 1,122,275.20 and 450,670.82 is: 621,927.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,241 : 1,122,275.20 = 450,670.82 : x
  2. Step 2: Convert to fraction form
    813,241/1,122,275.20 = 450,670.82/x
  3. Step 3: Cross multiply
    813,241x = 1,122,275.20 × 450,670.82
  4. Step 4: Simplify right side
    813,241x = 505,776,684,649.66
  5. Step 5: Solve for x
    x = 505,776,684,649.66/813,241
  6. Step 6: Final answer
    x = 621,927.18

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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.