Home / 908,421.50-1,362,843.18-309,387.86

Finding the Fourth Proportional to 908,421.50, 1,362,843.18 and 309,387.86

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Solution

The fourth proportional to 908,421.50, 1,362,843.18 and 309,387.86 is: 464,153.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,421.50 : 1,362,843.18 = 309,387.86 : x
  2. Step 2: Convert to fraction form
    908,421.50/1,362,843.18 = 309,387.86/x
  3. Step 3: Cross multiply
    908,421.50x = 1,362,843.18 × 309,387.86
  4. Step 4: Simplify right side
    908,421.50x = 421,647,128,161.58
  5. Step 5: Solve for x
    x = 421,647,128,161.58/908,421.50
  6. Step 6: Final answer
    x = 464,153.62

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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.