Home / 985,401.90-1,477,975.77-311,551.65

Finding the Fourth Proportional to 985,401.90, 1,477,975.77 and 311,551.65

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Solution

The fourth proportional to 985,401.90, 1,477,975.77 and 311,551.65 is: 467,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,401.90 : 1,477,975.77 = 311,551.65 : x
  2. Step 2: Convert to fraction form
    985,401.90/1,477,975.77 = 311,551.65/x
  3. Step 3: Cross multiply
    985,401.90x = 1,477,975.77 × 311,551.65
  4. Step 4: Simplify right side
    985,401.90x = 460,465,789,803.52
  5. Step 5: Solve for x
    x = 460,465,789,803.52/985,401.90
  6. Step 6: Final answer
    x = 467,287.30

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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.