Home / 1,280,256.86-1,920,483.30-381,629.90

Finding the Fourth Proportional to 1,280,256.86, 1,920,483.30 and 381,629.90

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Solution

The fourth proportional to 1,280,256.86, 1,920,483.30 and 381,629.90 is: 572,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,256.86 : 1,920,483.30 = 381,629.90 : x
  2. Step 2: Convert to fraction form
    1,280,256.86/1,920,483.30 = 381,629.90/x
  3. Step 3: Cross multiply
    1,280,256.86x = 1,920,483.30 × 381,629.90
  4. Step 4: Simplify right side
    1,280,256.86x = 732,913,840,128.25
  5. Step 5: Solve for x
    x = 732,913,840,128.25/1,280,256.86
  6. Step 6: Final answer
    x = 572,474.06

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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.