Home / 434,844.86-599,990.09-420,509.07

Finding the Fourth Proportional to 434,844.86, 599,990.09 and 420,509.07

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Solution

The fourth proportional to 434,844.86, 599,990.09 and 420,509.07 is: 580,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,844.86 : 599,990.09 = 420,509.07 : x
  2. Step 2: Convert to fraction form
    434,844.86/599,990.09 = 420,509.07/x
  3. Step 3: Cross multiply
    434,844.86x = 599,990.09 × 420,509.07
  4. Step 4: Simplify right side
    434,844.86x = 252,301,272,652.57
  5. Step 5: Solve for x
    x = 252,301,272,652.57/434,844.86
  6. Step 6: Final answer
    x = 580,209.86

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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.