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Finding the Fourth Proportional to 528,091.74, 790,917.75 and 317,264.94

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Solution

The fourth proportional to 528,091.74, 790,917.75 and 317,264.94 is: 475,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,091.74 : 790,917.75 = 317,264.94 : x
  2. Step 2: Convert to fraction form
    528,091.74/790,917.75 = 317,264.94/x
  3. Step 3: Cross multiply
    528,091.74x = 790,917.75 × 317,264.94
  4. Step 4: Simplify right side
    528,091.74x = 250,930,472,498.69
  5. Step 5: Solve for x
    x = 250,930,472,498.69/528,091.74
  6. Step 6: Final answer
    x = 475,164.55

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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.