Home / 897,407.20-1,238,445.25-489,515.91

Finding the Fourth Proportional to 897,407.20, 1,238,445.25 and 489,515.91

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Solution

The fourth proportional to 897,407.20, 1,238,445.25 and 489,515.91 is: 675,544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,407.20 : 1,238,445.25 = 489,515.91 : x
  2. Step 2: Convert to fraction form
    897,407.20/1,238,445.25 = 489,515.91/x
  3. Step 3: Cross multiply
    897,407.20x = 1,238,445.25 × 489,515.91
  4. Step 4: Simplify right side
    897,407.20x = 606,238,647,670.97
  5. Step 5: Solve for x
    x = 606,238,647,670.97/897,407.20
  6. Step 6: Final answer
    x = 675,544.67

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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.