Home / 420,471,471.15-630,707,206.73-248,142,869.55

Finding the Fourth Proportional to 420,471,471.15, 630,707,206.73 and 248,142,869.55

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Solution

The fourth proportional to 420,471,471.15, 630,707,206.73 and 248,142,869.55 is: 372,214,304.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,471,471.15 : 630,707,206.73 = 248,142,869.55 : x
  2. Step 2: Convert to fraction form
    420,471,471.15/630,707,206.73 = 248,142,869.55/x
  3. Step 3: Cross multiply
    420,471,471.15x = 630,707,206.73 × 248,142,869.55
  4. Step 4: Simplify right side
    420,471,471.15x = 156,505,496,122,606,560
  5. Step 5: Solve for x
    x = 156,505,496,122,606,560/420,471,471.15
  6. Step 6: Final answer
    x = 372,214,304.33

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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.