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Finding the Fourth Proportional to 489,066.60, 683,863.80 and 489,066.60

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Solution

The fourth proportional to 489,066.60, 683,863.80 and 489,066.60 is: 683,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,066.60 : 683,863.80 = 489,066.60 : x
  2. Step 2: Convert to fraction form
    489,066.60/683,863.80 = 489,066.60/x
  3. Step 3: Cross multiply
    489,066.60x = 683,863.80 × 489,066.60
  4. Step 4: Simplify right side
    489,066.60x = 334,454,943,529.08
  5. Step 5: Solve for x
    x = 334,454,943,529.08/489,066.60
  6. Step 6: Final answer
    x = 683,863.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.