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Finding the Fourth Proportional to 489,258.93, 674,890.59 and 307,682.85

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Solution

The fourth proportional to 489,258.93, 674,890.59 and 307,682.85 is: 424,422.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,258.93 : 674,890.59 = 307,682.85 : x
  2. Step 2: Convert to fraction form
    489,258.93/674,890.59 = 307,682.85/x
  3. Step 3: Cross multiply
    489,258.93x = 674,890.59 × 307,682.85
  4. Step 4: Simplify right side
    489,258.93x = 207,652,260,169.38
  5. Step 5: Solve for x
    x = 207,652,260,169.38/489,258.93
  6. Step 6: Final answer
    x = 424,422.01

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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.