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Finding the Fourth Proportional to 618,830.40, 926,690.40 and 494,414.40

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Solution

The fourth proportional to 618,830.40, 926,690.40 and 494,414.40 is: 740,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,830.40 : 926,690.40 = 494,414.40 : x
  2. Step 2: Convert to fraction form
    618,830.40/926,690.40 = 494,414.40/x
  3. Step 3: Cross multiply
    618,830.40x = 926,690.40 × 494,414.40
  4. Step 4: Simplify right side
    618,830.40x = 458,169,078,101.76
  5. Step 5: Solve for x
    x = 458,169,078,101.76/618,830.40
  6. Step 6: Final answer
    x = 740,379.07

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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.