Home / 801,345.72-1,105,856.64-438,769.35

Finding the Fourth Proportional to 801,345.72, 1,105,856.64 and 438,769.35

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Solution

The fourth proportional to 801,345.72, 1,105,856.64 and 438,769.35 is: 605,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,345.72 : 1,105,856.64 = 438,769.35 : x
  2. Step 2: Convert to fraction form
    801,345.72/1,105,856.64 = 438,769.35/x
  3. Step 3: Cross multiply
    801,345.72x = 1,105,856.64 × 438,769.35
  4. Step 4: Simplify right side
    801,345.72x = 485,215,999,125.98
  5. Step 5: Solve for x
    x = 485,215,999,125.98/801,345.72
  6. Step 6: Final answer
    x = 605,501.45

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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.