Home / 1,238,031.57-1,857,212.60-489,902.61

Finding the Fourth Proportional to 1,238,031.57, 1,857,212.60 and 489,902.61

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Solution

The fourth proportional to 1,238,031.57, 1,857,212.60 and 489,902.61 is: 734,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,031.57 : 1,857,212.60 = 489,902.61 : x
  2. Step 2: Convert to fraction form
    1,238,031.57/1,857,212.60 = 489,902.61/x
  3. Step 3: Cross multiply
    1,238,031.57x = 1,857,212.60 × 489,902.61
  4. Step 4: Simplify right side
    1,238,031.57x = 909,853,300,064.89
  5. Step 5: Solve for x
    x = 909,853,300,064.89/1,238,031.57
  6. Step 6: Final answer
    x = 734,919.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.