Home / 605,619.20-908,428.80-289,913.60

Finding the Fourth Proportional to 605,619.20, 908,428.80 and 289,913.60

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Solution

The fourth proportional to 605,619.20, 908,428.80 and 289,913.60 is: 434,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,619.20 : 908,428.80 = 289,913.60 : x
  2. Step 2: Convert to fraction form
    605,619.20/908,428.80 = 289,913.60/x
  3. Step 3: Cross multiply
    605,619.20x = 908,428.80 × 289,913.60
  4. Step 4: Simplify right side
    605,619.20x = 263,365,863,751.68
  5. Step 5: Solve for x
    x = 263,365,863,751.68/605,619.20
  6. Step 6: Final answer
    x = 434,870.40

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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.