Home / 763,840.68-1,054,103.13-419,704.50

Finding the Fourth Proportional to 763,840.68, 1,054,103.13 and 419,704.50

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Solution

The fourth proportional to 763,840.68, 1,054,103.13 and 419,704.50 is: 579,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,840.68 : 1,054,103.13 = 419,704.50 : x
  2. Step 2: Convert to fraction form
    763,840.68/1,054,103.13 = 419,704.50/x
  3. Step 3: Cross multiply
    763,840.68x = 1,054,103.13 × 419,704.50
  4. Step 4: Simplify right side
    763,840.68x = 442,411,827,125.09
  5. Step 5: Solve for x
    x = 442,411,827,125.09/763,840.68
  6. Step 6: Final answer
    x = 579,193.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.