Home / 390,641.12-585,358.58-263,784.20

Finding the Fourth Proportional to 390,641.12, 585,358.58 and 263,784.20

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Solution

The fourth proportional to 390,641.12, 585,358.58 and 263,784.20 is: 395,269.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,641.12 : 585,358.58 = 263,784.20 : x
  2. Step 2: Convert to fraction form
    390,641.12/585,358.58 = 263,784.20/x
  3. Step 3: Cross multiply
    390,641.12x = 585,358.58 × 263,784.20
  4. Step 4: Simplify right side
    390,641.12x = 154,408,344,738.44
  5. Step 5: Solve for x
    x = 154,408,344,738.44/390,641.12
  6. Step 6: Final answer
    x = 395,269.05

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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.