Home / 1,243,816.36-1,865,857.88-345,261.90

Finding the Fourth Proportional to 1,243,816.36, 1,865,857.88 and 345,261.90

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Solution

The fourth proportional to 1,243,816.36, 1,865,857.88 and 345,261.90 is: 517,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,816.36 : 1,865,857.88 = 345,261.90 : x
  2. Step 2: Convert to fraction form
    1,243,816.36/1,865,857.88 = 345,261.90/x
  3. Step 3: Cross multiply
    1,243,816.36x = 1,865,857.88 × 345,261.90
  4. Step 4: Simplify right side
    1,243,816.36x = 644,209,636,778.77
  5. Step 5: Solve for x
    x = 644,209,636,778.77/1,243,816.36
  6. Step 6: Final answer
    x = 517,929.86

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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.