Home / 420,738.30-580,622.04-239,464.08

Finding the Fourth Proportional to 420,738.30, 580,622.04 and 239,464.08

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Solution

The fourth proportional to 420,738.30, 580,622.04 and 239,464.08 is: 330,462.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,738.30 : 580,622.04 = 239,464.08 : x
  2. Step 2: Convert to fraction form
    420,738.30/580,622.04 = 239,464.08/x
  3. Step 3: Cross multiply
    420,738.30x = 580,622.04 × 239,464.08
  4. Step 4: Simplify right side
    420,738.30x = 139,038,122,636.32
  5. Step 5: Solve for x
    x = 139,038,122,636.32/420,738.30
  6. Step 6: Final answer
    x = 330,462.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.