Home / 412,025,212.80-618,037,819.20-380,457,617.40

Finding the Fourth Proportional to 412,025,212.80, 618,037,819.20 and 380,457,617.40

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Solution

The fourth proportional to 412,025,212.80, 618,037,819.20 and 380,457,617.40 is: 570,686,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,025,212.80 : 618,037,819.20 = 380,457,617.40 : x
  2. Step 2: Convert to fraction form
    412,025,212.80/618,037,819.20 = 380,457,617.40/x
  3. Step 3: Cross multiply
    412,025,212.80x = 618,037,819.20 × 380,457,617.40
  4. Step 4: Simplify right side
    412,025,212.80x = 235,137,196,155,923,968
  5. Step 5: Solve for x
    x = 235,137,196,155,923,968/412,025,212.80
  6. Step 6: Final answer
    x = 570,686,426.10

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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.