Home / 831,012.78-1,245,535.02-381,354.65

Finding the Fourth Proportional to 831,012.78, 1,245,535.02 and 381,354.65

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Solution

The fourth proportional to 831,012.78, 1,245,535.02 and 381,354.65 is: 571,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,012.78 : 1,245,535.02 = 381,354.65 : x
  2. Step 2: Convert to fraction form
    831,012.78/1,245,535.02 = 381,354.65/x
  3. Step 3: Cross multiply
    831,012.78x = 1,245,535.02 × 381,354.65
  4. Step 4: Simplify right side
    831,012.78x = 474,990,565,387.17
  5. Step 5: Solve for x
    x = 474,990,565,387.17/831,012.78
  6. Step 6: Final answer
    x = 571,580.34

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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.