Home / 1,325,136.60-1,987,267.50-426,363.48

Finding the Fourth Proportional to 1,325,136.60, 1,987,267.50 and 426,363.48

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Solution

The fourth proportional to 1,325,136.60, 1,987,267.50 and 426,363.48 is: 639,404.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,136.60 : 1,987,267.50 = 426,363.48 : x
  2. Step 2: Convert to fraction form
    1,325,136.60/1,987,267.50 = 426,363.48/x
  3. Step 3: Cross multiply
    1,325,136.60x = 1,987,267.50 × 426,363.48
  4. Step 4: Simplify right side
    1,325,136.60x = 847,298,286,990.90
  5. Step 5: Solve for x
    x = 847,298,286,990.90/1,325,136.60
  6. Step 6: Final answer
    x = 639,404.49

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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.