Home / 412,025,129.80-618,037,694.70-380,457,534.40

Finding the Fourth Proportional to 412,025,129.80, 618,037,694.70 and 380,457,534.40

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Solution

The fourth proportional to 412,025,129.80, 618,037,694.70 and 380,457,534.40 is: 570,686,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,025,129.80 : 618,037,694.70 = 380,457,534.40 : x
  2. Step 2: Convert to fraction form
    412,025,129.80/618,037,694.70 = 380,457,534.40/x
  3. Step 3: Cross multiply
    412,025,129.80x = 618,037,694.70 × 380,457,534.40
  4. Step 4: Simplify right side
    412,025,129.80x = 235,137,097,491,821,952
  5. Step 5: Solve for x
    x = 235,137,097,491,821,952/412,025,129.80
  6. Step 6: Final answer
    x = 570,686,301.60

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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.