Home / 420,352.24-630,559.40-120,820.72

Finding the Fourth Proportional to 420,352.24, 630,559.40 and 120,820.72

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Solution

The fourth proportional to 420,352.24, 630,559.40 and 120,820.72 is: 181,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,352.24 : 630,559.40 = 120,820.72 : x
  2. Step 2: Convert to fraction form
    420,352.24/630,559.40 = 120,820.72/x
  3. Step 3: Cross multiply
    420,352.24x = 630,559.40 × 120,820.72
  4. Step 4: Simplify right side
    420,352.24x = 76,184,640,710.77
  5. Step 5: Solve for x
    x = 76,184,640,710.77/420,352.24
  6. Step 6: Final answer
    x = 181,240.00

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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.