Home / 938,865.78-1,407,676.50-339,749.01

Finding the Fourth Proportional to 938,865.78, 1,407,676.50 and 339,749.01

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Solution

The fourth proportional to 938,865.78, 1,407,676.50 and 339,749.01 is: 509,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,865.78 : 1,407,676.50 = 339,749.01 : x
  2. Step 2: Convert to fraction form
    938,865.78/1,407,676.50 = 339,749.01/x
  3. Step 3: Cross multiply
    938,865.78x = 1,407,676.50 × 339,749.01
  4. Step 4: Simplify right side
    938,865.78x = 478,256,697,275.27
  5. Step 5: Solve for x
    x = 478,256,697,275.27/938,865.78
  6. Step 6: Final answer
    x = 509,398.37

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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.