Home / 917,231.92-1,265,723.58-509,308.90

Finding the Fourth Proportional to 917,231.92, 1,265,723.58 and 509,308.90

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Solution

The fourth proportional to 917,231.92, 1,265,723.58 and 509,308.90 is: 702,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,231.92 : 1,265,723.58 = 509,308.90 : x
  2. Step 2: Convert to fraction form
    917,231.92/1,265,723.58 = 509,308.90/x
  3. Step 3: Cross multiply
    917,231.92x = 1,265,723.58 × 509,308.90
  4. Step 4: Simplify right side
    917,231.92x = 644,644,282,979.46
  5. Step 5: Solve for x
    x = 644,644,282,979.46/917,231.92
  6. Step 6: Final answer
    x = 702,814.93

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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.