Home / 479,980.72-719,961.36-124,986.88

Finding the Fourth Proportional to 479,980.72, 719,961.36 and 124,986.88

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Solution

The fourth proportional to 479,980.72, 719,961.36 and 124,986.88 is: 187,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,980.72 : 719,961.36 = 124,986.88 : x
  2. Step 2: Convert to fraction form
    479,980.72/719,961.36 = 124,986.88/x
  3. Step 3: Cross multiply
    479,980.72x = 719,961.36 × 124,986.88
  4. Step 4: Simplify right side
    479,980.72x = 89,985,724,106.96
  5. Step 5: Solve for x
    x = 89,985,724,106.96/479,980.72
  6. Step 6: Final answer
    x = 187,477.79

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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.