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Finding the Fourth Proportional to 786,053, 1,179,328.72 and 280,603.14

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Solution

The fourth proportional to 786,053, 1,179,328.72 and 280,603.14 is: 420,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,053 : 1,179,328.72 = 280,603.14 : x
  2. Step 2: Convert to fraction form
    786,053/1,179,328.72 = 280,603.14/x
  3. Step 3: Cross multiply
    786,053x = 1,179,328.72 × 280,603.14
  4. Step 4: Simplify right side
    786,053x = 330,923,341,924.18
  5. Step 5: Solve for x
    x = 330,923,341,924.18/786,053
  6. Step 6: Final answer
    x = 420,993.68

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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.