Home / 427,013,005.40-639,244,049.70-254,400,968.60

Finding the Fourth Proportional to 427,013,005.40, 639,244,049.70 and 254,400,968.60

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Solution

The fourth proportional to 427,013,005.40, 639,244,049.70 and 254,400,968.60 is: 380,841,574.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,013,005.40 : 639,244,049.70 = 254,400,968.60 : x
  2. Step 2: Convert to fraction form
    427,013,005.40/639,244,049.70 = 254,400,968.60/x
  3. Step 3: Cross multiply
    427,013,005.40x = 639,244,049.70 × 254,400,968.60
  4. Step 4: Simplify right side
    427,013,005.40x = 162,624,305,415,466,560
  5. Step 5: Solve for x
    x = 162,624,305,415,466,560/427,013,005.40
  6. Step 6: Final answer
    x = 380,841,574.75

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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.