Home / 1,311,136.64-1,966,702.22-412,656.90

Finding the Fourth Proportional to 1,311,136.64, 1,966,702.22 and 412,656.90

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Solution

The fourth proportional to 1,311,136.64, 1,966,702.22 and 412,656.90 is: 618,984.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,136.64 : 1,966,702.22 = 412,656.90 : x
  2. Step 2: Convert to fraction form
    1,311,136.64/1,966,702.22 = 412,656.90/x
  3. Step 3: Cross multiply
    1,311,136.64x = 1,966,702.22 × 412,656.90
  4. Step 4: Simplify right side
    1,311,136.64x = 811,573,241,328.32
  5. Step 5: Solve for x
    x = 811,573,241,328.32/1,311,136.64
  6. Step 6: Final answer
    x = 618,984.49

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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.