Home / 897,863.85-1,239,078.51-489,992.10

Finding the Fourth Proportional to 897,863.85, 1,239,078.51 and 489,992.10

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Solution

The fourth proportional to 897,863.85, 1,239,078.51 and 489,992.10 is: 676,203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,863.85 : 1,239,078.51 = 489,992.10 : x
  2. Step 2: Convert to fraction form
    897,863.85/1,239,078.51 = 489,992.10/x
  3. Step 3: Cross multiply
    897,863.85x = 1,239,078.51 × 489,992.10
  4. Step 4: Simplify right side
    897,863.85x = 607,138,681,179.77
  5. Step 5: Solve for x
    x = 607,138,681,179.77/897,863.85
  6. Step 6: Final answer
    x = 676,203.50

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Double scale
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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.