Home / 1,259,713,095.30-1,889,569,642.95-639,840,312.90

Finding the Fourth Proportional to 1,259,713,095.30, 1,889,569,642.95 and 639,840,312.90

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Solution

The fourth proportional to 1,259,713,095.30, 1,889,569,642.95 and 639,840,312.90 is: 959,760,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,713,095.30 : 1,889,569,642.95 = 639,840,312.90 : x
  2. Step 2: Convert to fraction form
    1,259,713,095.30/1,889,569,642.95 = 639,840,312.90/x
  3. Step 3: Cross multiply
    1,259,713,095.30x = 1,889,569,642.95 × 639,840,312.90
  4. Step 4: Simplify right side
    1,259,713,095.30x = 1,209,022,831,591,469,312
  5. Step 5: Solve for x
    x = 1,209,022,831,591,469,312/1,259,713,095.30
  6. Step 6: Final answer
    x = 959,760,469.35

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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.