Home / 420,451.14-630,783.22-120,925.28

Finding the Fourth Proportional to 420,451.14, 630,783.22 and 120,925.28

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Solution

The fourth proportional to 420,451.14, 630,783.22 and 120,925.28 is: 181,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,451.14 : 630,783.22 = 120,925.28 : x
  2. Step 2: Convert to fraction form
    420,451.14/630,783.22 = 120,925.28/x
  3. Step 3: Cross multiply
    420,451.14x = 630,783.22 × 120,925.28
  4. Step 4: Simplify right side
    420,451.14x = 76,277,637,497.80
  5. Step 5: Solve for x
    x = 76,277,637,497.80/420,451.14
  6. Step 6: Final answer
    x = 181,418.55

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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.