Home / 990,995.85-1,486,173.90-280,833.21

Finding the Fourth Proportional to 990,995.85, 1,486,173.90 and 280,833.21

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Solution

The fourth proportional to 990,995.85, 1,486,173.90 and 280,833.21 is: 421,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,995.85 : 1,486,173.90 = 280,833.21 : x
  2. Step 2: Convert to fraction form
    990,995.85/1,486,173.90 = 280,833.21/x
  3. Step 3: Cross multiply
    990,995.85x = 1,486,173.90 × 280,833.21
  4. Step 4: Simplify right side
    990,995.85x = 417,366,986,955.22
  5. Step 5: Solve for x
    x = 417,366,986,955.22/990,995.85
  6. Step 6: Final answer
    x = 421,159.17

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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.