Home / 420,278,051.40-630,417,077.10-396,469,494.60

Finding the Fourth Proportional to 420,278,051.40, 630,417,077.10 and 396,469,494.60

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Solution

The fourth proportional to 420,278,051.40, 630,417,077.10 and 396,469,494.60 is: 594,704,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,278,051.40 : 630,417,077.10 = 396,469,494.60 : x
  2. Step 2: Convert to fraction form
    420,278,051.40/630,417,077.10 = 396,469,494.60/x
  3. Step 3: Cross multiply
    420,278,051.40x = 630,417,077.10 × 396,469,494.60
  4. Step 4: Simplify right side
    420,278,051.40x = 249,941,139,945,046,272
  5. Step 5: Solve for x
    x = 249,941,139,945,046,272/420,278,051.40
  6. Step 6: Final answer
    x = 594,704,241.90

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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.