Home / 728,711.52-1,005,709.64-426,905.52

Finding the Fourth Proportional to 728,711.52, 1,005,709.64 and 426,905.52

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Solution

The fourth proportional to 728,711.52, 1,005,709.64 and 426,905.52 is: 589,181.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,711.52 : 1,005,709.64 = 426,905.52 : x
  2. Step 2: Convert to fraction form
    728,711.52/1,005,709.64 = 426,905.52/x
  3. Step 3: Cross multiply
    728,711.52x = 1,005,709.64 × 426,905.52
  4. Step 4: Simplify right side
    728,711.52x = 429,342,996,833.21
  5. Step 5: Solve for x
    x = 429,342,996,833.21/728,711.52
  6. Step 6: Final answer
    x = 589,181.02

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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.