Home / 1,242,005.30-1,863,007.95-443,312.90

Finding the Fourth Proportional to 1,242,005.30, 1,863,007.95 and 443,312.90

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Solution

The fourth proportional to 1,242,005.30, 1,863,007.95 and 443,312.90 is: 664,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,005.30 : 1,863,007.95 = 443,312.90 : x
  2. Step 2: Convert to fraction form
    1,242,005.30/1,863,007.95 = 443,312.90/x
  3. Step 3: Cross multiply
    1,242,005.30x = 1,863,007.95 × 443,312.90
  4. Step 4: Simplify right side
    1,242,005.30x = 825,895,457,037.56
  5. Step 5: Solve for x
    x = 825,895,457,037.56/1,242,005.30
  6. Step 6: Final answer
    x = 664,969.35

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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.