Home / 450,519.96-621,719.20-243,788.36

Finding the Fourth Proportional to 450,519.96, 621,719.20 and 243,788.36

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Solution

The fourth proportional to 450,519.96, 621,719.20 and 243,788.36 is: 336,428.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,519.96 : 621,719.20 = 243,788.36 : x
  2. Step 2: Convert to fraction form
    450,519.96/621,719.20 = 243,788.36/x
  3. Step 3: Cross multiply
    450,519.96x = 621,719.20 × 243,788.36
  4. Step 4: Simplify right side
    450,519.96x = 151,567,904,148.51
  5. Step 5: Solve for x
    x = 151,567,904,148.51/450,519.96
  6. Step 6: Final answer
    x = 336,428.83

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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.