Home / 1,047,938,728.80-1,571,908,093.20-639,792,040.80

Finding the Fourth Proportional to 1,047,938,728.80, 1,571,908,093.20 and 639,792,040.80

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Solution

The fourth proportional to 1,047,938,728.80, 1,571,908,093.20 and 639,792,040.80 is: 959,688,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,938,728.80 : 1,571,908,093.20 = 639,792,040.80 : x
  2. Step 2: Convert to fraction form
    1,047,938,728.80/1,571,908,093.20 = 639,792,040.80/x
  3. Step 3: Cross multiply
    1,047,938,728.80x = 1,571,908,093.20 × 639,792,040.80
  4. Step 4: Simplify right side
    1,047,938,728.80x = 1,005,694,286,898,464,512
  5. Step 5: Solve for x
    x = 1,005,694,286,898,464,512/1,047,938,728.80
  6. Step 6: Final answer
    x = 959,688,061.20

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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.