Home / 420,276,350.40-630,414,525.60-396,467,793.60

Finding the Fourth Proportional to 420,276,350.40, 630,414,525.60 and 396,467,793.60

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Solution

The fourth proportional to 420,276,350.40, 630,414,525.60 and 396,467,793.60 is: 594,701,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,276,350.40 : 630,414,525.60 = 396,467,793.60 : x
  2. Step 2: Convert to fraction form
    420,276,350.40/630,414,525.60 = 396,467,793.60/x
  3. Step 3: Cross multiply
    420,276,350.40x = 630,414,525.60 × 396,467,793.60
  4. Step 4: Simplify right side
    420,276,350.40x = 249,939,056,018,022,752
  5. Step 5: Solve for x
    x = 249,939,056,018,022,752/420,276,350.40
  6. Step 6: Final answer
    x = 594,701,690.40

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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.