Home / 1,243,428.80-1,866,064.80-911,652.80

Finding the Fourth Proportional to 1,243,428.80, 1,866,064.80 and 911,652.80

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Solution

The fourth proportional to 1,243,428.80, 1,866,064.80 and 911,652.80 is: 1,368,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,428.80 : 1,866,064.80 = 911,652.80 : x
  2. Step 2: Convert to fraction form
    1,243,428.80/1,866,064.80 = 911,652.80/x
  3. Step 3: Cross multiply
    1,243,428.80x = 1,866,064.80 × 911,652.80
  4. Step 4: Simplify right side
    1,243,428.80x = 1,701,203,199,901.44
  5. Step 5: Solve for x
    x = 1,701,203,199,901.44/1,243,428.80
  6. Step 6: Final answer
    x = 1,368,154.90

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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.