Home / 1,280,893,436.54-1,920,963,239.94-580,980,653.18

Finding the Fourth Proportional to 1,280,893,436.54, 1,920,963,239.94 and 580,980,653.18

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Solution

The fourth proportional to 1,280,893,436.54, 1,920,963,239.94 and 580,980,653.18 is: 871,300,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,893,436.54 : 1,920,963,239.94 = 580,980,653.18 : x
  2. Step 2: Convert to fraction form
    1,280,893,436.54/1,920,963,239.94 = 580,980,653.18/x
  3. Step 3: Cross multiply
    1,280,893,436.54x = 1,920,963,239.94 × 580,980,653.18
  4. Step 4: Simplify right side
    1,280,893,436.54x = 1,116,042,477,875,110,144
  5. Step 5: Solve for x
    x = 1,116,042,477,875,110,144/1,280,893,436.54
  6. Step 6: Final answer
    x = 871,300,020.78

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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.