Home / 985,667.67-1,478,683.76-311,918.58

Finding the Fourth Proportional to 985,667.67, 1,478,683.76 and 311,918.58

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Solution

The fourth proportional to 985,667.67, 1,478,683.76 and 311,918.58 is: 467,935.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,667.67 : 1,478,683.76 = 311,918.58 : x
  2. Step 2: Convert to fraction form
    985,667.67/1,478,683.76 = 311,918.58/x
  3. Step 3: Cross multiply
    985,667.67x = 1,478,683.76 × 311,918.58
  4. Step 4: Simplify right side
    985,667.67x = 461,228,937,128.67
  5. Step 5: Solve for x
    x = 461,228,937,128.67/985,667.67
  6. Step 6: Final answer
    x = 467,935.54

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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.