Home / 489,004.32-674,827.02-285,039.84

Finding the Fourth Proportional to 489,004.32, 674,827.02 and 285,039.84

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Solution

The fourth proportional to 489,004.32, 674,827.02 and 285,039.84 is: 393,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,004.32 : 674,827.02 = 285,039.84 : x
  2. Step 2: Convert to fraction form
    489,004.32/674,827.02 = 285,039.84/x
  3. Step 3: Cross multiply
    489,004.32x = 674,827.02 × 285,039.84
  4. Step 4: Simplify right side
    489,004.32x = 192,352,585,808.48
  5. Step 5: Solve for x
    x = 192,352,585,808.48/489,004.32
  6. Step 6: Final answer
    x = 393,355.60

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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.