Home / 427,013,006.40-639,244,051.20-254,400,969.60

Finding the Fourth Proportional to 427,013,006.40, 639,244,051.20 and 254,400,969.60

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Solution

The fourth proportional to 427,013,006.40, 639,244,051.20 and 254,400,969.60 is: 380,841,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,013,006.40 : 639,244,051.20 = 254,400,969.60 : x
  2. Step 2: Convert to fraction form
    427,013,006.40/639,244,051.20 = 254,400,969.60/x
  3. Step 3: Cross multiply
    427,013,006.40x = 639,244,051.20 × 254,400,969.60
  4. Step 4: Simplify right side
    427,013,006.40x = 162,624,306,436,312,064
  5. Step 5: Solve for x
    x = 162,624,306,436,312,064/427,013,006.40
  6. Step 6: Final answer
    x = 380,841,576.25

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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.