Home / 897,782.12-1,238,969.20-489,906.35

Finding the Fourth Proportional to 897,782.12, 1,238,969.20 and 489,906.35

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Solution

The fourth proportional to 897,782.12, 1,238,969.20 and 489,906.35 is: 676,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,782.12 : 1,238,969.20 = 489,906.35 : x
  2. Step 2: Convert to fraction form
    897,782.12/1,238,969.20 = 489,906.35/x
  3. Step 3: Cross multiply
    897,782.12x = 1,238,969.20 × 489,906.35
  4. Step 4: Simplify right side
    897,782.12x = 606,978,872,339.57
  5. Step 5: Solve for x
    x = 606,978,872,339.57/897,782.12
  6. Step 6: Final answer
    x = 676,087.06

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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.