Home / 840,118,363.20-1,258,162,005.60-408,792,974.40

Finding the Fourth Proportional to 840,118,363.20, 1,258,162,005.60 and 408,792,974.40

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Solution

The fourth proportional to 840,118,363.20, 1,258,162,005.60 and 408,792,974.40 is: 612,208,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,118,363.20 : 1,258,162,005.60 = 408,792,974.40 : x
  2. Step 2: Convert to fraction form
    840,118,363.20/1,258,162,005.60 = 408,792,974.40/x
  3. Step 3: Cross multiply
    840,118,363.20x = 1,258,162,005.60 × 408,792,974.40
  4. Step 4: Simplify right side
    840,118,363.20x = 514,327,788,546,293,376
  5. Step 5: Solve for x
    x = 514,327,788,546,293,376/840,118,363.20
  6. Step 6: Final answer
    x = 612,208,720.91

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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.