Home / 420,781.40-630,977.70-184,002.20

Finding the Fourth Proportional to 420,781.40, 630,977.70 and 184,002.20

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Solution

The fourth proportional to 420,781.40, 630,977.70 and 184,002.20 is: 275,918.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,781.40 : 630,977.70 = 184,002.20 : x
  2. Step 2: Convert to fraction form
    420,781.40/630,977.70 = 184,002.20/x
  3. Step 3: Cross multiply
    420,781.40x = 630,977.70 × 184,002.20
  4. Step 4: Simplify right side
    420,781.40x = 116,101,284,950.94
  5. Step 5: Solve for x
    x = 116,101,284,950.94/420,781.40
  6. Step 6: Final answer
    x = 275,918.29

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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.