Home / 412,025,200.80-618,037,801.20-380,457,605.40

Finding the Fourth Proportional to 412,025,200.80, 618,037,801.20 and 380,457,605.40

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Solution

The fourth proportional to 412,025,200.80, 618,037,801.20 and 380,457,605.40 is: 570,686,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,025,200.80 : 618,037,801.20 = 380,457,605.40 : x
  2. Step 2: Convert to fraction form
    412,025,200.80/618,037,801.20 = 380,457,605.40/x
  3. Step 3: Cross multiply
    412,025,200.80x = 618,037,801.20 × 380,457,605.40
  4. Step 4: Simplify right side
    412,025,200.80x = 235,137,181,891,233,248
  5. Step 5: Solve for x
    x = 235,137,181,891,233,248/412,025,200.80
  6. Step 6: Final answer
    x = 570,686,408.10

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1.5x scale

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.