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Finding the Fourth Proportional to 489,481, 675,866.06 and 317,480.72

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Solution

The fourth proportional to 489,481, 675,866.06 and 317,480.72 is: 438,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,481 : 675,866.06 = 317,480.72 : x
  2. Step 2: Convert to fraction form
    489,481/675,866.06 = 317,480.72/x
  3. Step 3: Cross multiply
    489,481x = 675,866.06 × 317,480.72
  4. Step 4: Simplify right side
    489,481x = 214,574,443,352.36
  5. Step 5: Solve for x
    x = 214,574,443,352.36/489,481
  6. Step 6: Final answer
    x = 438,371.34

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1.5x scale

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.