Home / 489,110.40-675,112.32-288,023.04

Finding the Fourth Proportional to 489,110.40, 675,112.32 and 288,023.04

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Solution

The fourth proportional to 489,110.40, 675,112.32 and 288,023.04 is: 397,554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,110.40 : 675,112.32 = 288,023.04 : x
  2. Step 2: Convert to fraction form
    489,110.40/675,112.32 = 288,023.04/x
  3. Step 3: Cross multiply
    489,110.40x = 675,112.32 × 288,023.04
  4. Step 4: Simplify right side
    489,110.40x = 194,447,902,747.85
  5. Step 5: Solve for x
    x = 194,447,902,747.85/489,110.40
  6. Step 6: Final answer
    x = 397,554.22

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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.