Home / 928,209.64-1,280,919-520,377.88

Finding the Fourth Proportional to 928,209.64, 1,280,919 and 520,377.88

Calculator

Solution

The fourth proportional to 928,209.64, 1,280,919 and 520,377.88 is: 718,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,209.64 : 1,280,919 = 520,377.88 : x
  2. Step 2: Convert to fraction form
    928,209.64/1,280,919 = 520,377.88/x
  3. Step 3: Cross multiply
    928,209.64x = 1,280,919 × 520,377.88
  4. Step 4: Simplify right side
    928,209.64x = 666,561,913,671.72
  5. Step 5: Solve for x
    x = 666,561,913,671.72/928,209.64
  6. Step 6: Final answer
    x = 718,115.70

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.