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Finding the Fourth Proportional to 813,051, 1,122,010.38 and 455,355

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Solution

The fourth proportional to 813,051, 1,122,010.38 and 455,355 is: 628,389.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,051 : 1,122,010.38 = 455,355 : x
  2. Step 2: Convert to fraction form
    813,051/1,122,010.38 = 455,355/x
  3. Step 3: Cross multiply
    813,051x = 1,122,010.38 × 455,355
  4. Step 4: Simplify right side
    813,051x = 510,913,036,584.90
  5. Step 5: Solve for x
    x = 510,913,036,584.90/813,051
  6. Step 6: Final answer
    x = 628,389.90

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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.