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Finding the Fourth Proportional to 489,416.77, 675,684.71 and 308,283.96

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Solution

The fourth proportional to 489,416.77, 675,684.71 and 308,283.96 is: 425,614.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,416.77 : 675,684.71 = 308,283.96 : x
  2. Step 2: Convert to fraction form
    489,416.77/675,684.71 = 308,283.96/x
  3. Step 3: Cross multiply
    489,416.77x = 675,684.71 × 308,283.96
  4. Step 4: Simplify right side
    489,416.77x = 208,302,760,258.71
  5. Step 5: Solve for x
    x = 208,302,760,258.71/489,416.77
  6. Step 6: Final answer
    x = 425,614.27

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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.