Home / 724,742.78-1,000,170.79-402,458.36

Finding the Fourth Proportional to 724,742.78, 1,000,170.79 and 402,458.36

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Solution

The fourth proportional to 724,742.78, 1,000,170.79 and 402,458.36 is: 555,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,742.78 : 1,000,170.79 = 402,458.36 : x
  2. Step 2: Convert to fraction form
    724,742.78/1,000,170.79 = 402,458.36/x
  3. Step 3: Cross multiply
    724,742.78x = 1,000,170.79 × 402,458.36
  4. Step 4: Simplify right side
    724,742.78x = 402,527,089,856.31
  5. Step 5: Solve for x
    x = 402,527,089,856.31/724,742.78
  6. Step 6: Final answer
    x = 555,406.83

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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.