Home / 1,280,258,569.80-1,921,822,745.40-990,410,648.40

Finding the Fourth Proportional to 1,280,258,569.80, 1,921,822,745.40 and 990,410,648.40

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Solution

The fourth proportional to 1,280,258,569.80, 1,921,822,745.40 and 990,410,648.40 is: 1,486,726,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,258,569.80 : 1,921,822,745.40 = 990,410,648.40 : x
  2. Step 2: Convert to fraction form
    1,280,258,569.80/1,921,822,745.40 = 990,410,648.40/x
  3. Step 3: Cross multiply
    1,280,258,569.80x = 1,921,822,745.40 × 990,410,648.40
  4. Step 4: Simplify right side
    1,280,258,569.80x = 1,903,393,711,381,482,240
  5. Step 5: Solve for x
    x = 1,903,393,711,381,482,240/1,280,258,569.80
  6. Step 6: Final answer
    x = 1,486,726,006.98

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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.