Home / 840,495.78-1,159,878.79-477,919.73

Finding the Fourth Proportional to 840,495.78, 1,159,878.79 and 477,919.73

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Solution

The fourth proportional to 840,495.78, 1,159,878.79 and 477,919.73 is: 659,526.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,495.78 : 1,159,878.79 = 477,919.73 : x
  2. Step 2: Convert to fraction form
    840,495.78/1,159,878.79 = 477,919.73/x
  3. Step 3: Cross multiply
    840,495.78x = 1,159,878.79 × 477,919.73
  4. Step 4: Simplify right side
    840,495.78x = 554,328,958,149.53
  5. Step 5: Solve for x
    x = 554,328,958,149.53/840,495.78
  6. Step 6: Final answer
    x = 659,526.16

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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.