Home / 427,012,984.40-639,244,018.20-254,400,947.60

Finding the Fourth Proportional to 427,012,984.40, 639,244,018.20 and 254,400,947.60

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Solution

The fourth proportional to 427,012,984.40, 639,244,018.20 and 254,400,947.60 is: 380,841,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,012,984.40 : 639,244,018.20 = 254,400,947.60 : x
  2. Step 2: Convert to fraction form
    427,012,984.40/639,244,018.20 = 254,400,947.60/x
  3. Step 3: Cross multiply
    427,012,984.40x = 639,244,018.20 × 254,400,947.60
  4. Step 4: Simplify right side
    427,012,984.40x = 162,624,283,977,711,648
  5. Step 5: Solve for x
    x = 162,624,283,977,711,648/427,012,984.40
  6. Step 6: Final answer
    x = 380,841,543.28

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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.