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Finding the Fourth Proportional to 489,582.76, 675,630.66 and 274,769.32

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Solution

The fourth proportional to 489,582.76, 675,630.66 and 274,769.32 is: 379,185.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,582.76 : 675,630.66 = 274,769.32 : x
  2. Step 2: Convert to fraction form
    489,582.76/675,630.66 = 274,769.32/x
  3. Step 3: Cross multiply
    489,582.76x = 675,630.66 × 274,769.32
  4. Step 4: Simplify right side
    489,582.76x = 185,642,577,019.35
  5. Step 5: Solve for x
    x = 185,642,577,019.35/489,582.76
  6. Step 6: Final answer
    x = 379,185.28

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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.