Home / 912,770.40-1,369,285.20-281,618.40

Finding the Fourth Proportional to 912,770.40, 1,369,285.20 and 281,618.40

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Solution

The fourth proportional to 912,770.40, 1,369,285.20 and 281,618.40 is: 422,467.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,770.40 : 1,369,285.20 = 281,618.40 : x
  2. Step 2: Convert to fraction form
    912,770.40/1,369,285.20 = 281,618.40/x
  3. Step 3: Cross multiply
    912,770.40x = 1,369,285.20 × 281,618.40
  4. Step 4: Simplify right side
    912,770.40x = 385,615,907,167.68
  5. Step 5: Solve for x
    x = 385,615,907,167.68/912,770.40
  6. Step 6: Final answer
    x = 422,467.59

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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.