Home / 1,138,702.30-1,706,887.05-665,143.90

Finding the Fourth Proportional to 1,138,702.30, 1,706,887.05 and 665,143.90

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Solution

The fourth proportional to 1,138,702.30, 1,706,887.05 and 665,143.90 is: 997,034.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,702.30 : 1,706,887.05 = 665,143.90 : x
  2. Step 2: Convert to fraction form
    1,138,702.30/1,706,887.05 = 665,143.90/x
  3. Step 3: Cross multiply
    1,138,702.30x = 1,706,887.05 × 665,143.90
  4. Step 4: Simplify right side
    1,138,702.30x = 1,135,325,509,296.50
  5. Step 5: Solve for x
    x = 1,135,325,509,296.50/1,138,702.30
  6. Step 6: Final answer
    x = 997,034.53

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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.