Home / 1,387,135.30-2,080,702.95-389,863.30

Finding the Fourth Proportional to 1,387,135.30, 2,080,702.95 and 389,863.30

Calculator

Solution

The fourth proportional to 1,387,135.30, 2,080,702.95 and 389,863.30 is: 584,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,135.30 : 2,080,702.95 = 389,863.30 : x
  2. Step 2: Convert to fraction form
    1,387,135.30/2,080,702.95 = 389,863.30/x
  3. Step 3: Cross multiply
    1,387,135.30x = 2,080,702.95 × 389,863.30
  4. Step 4: Simplify right side
    1,387,135.30x = 811,189,718,406.74
  5. Step 5: Solve for x
    x = 811,189,718,406.74/1,387,135.30
  6. Step 6: Final answer
    x = 584,794.95

Related Problems

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.