Home / 515,219.40-772,829.10-279,023.40

Finding the Fourth Proportional to 515,219.40, 772,829.10 and 279,023.40

Calculator

Solution

The fourth proportional to 515,219.40, 772,829.10 and 279,023.40 is: 418,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,219.40 : 772,829.10 = 279,023.40 : x
  2. Step 2: Convert to fraction form
    515,219.40/772,829.10 = 279,023.40/x
  3. Step 3: Cross multiply
    515,219.40x = 772,829.10 × 279,023.40
  4. Step 4: Simplify right side
    515,219.40x = 215,637,403,100.94
  5. Step 5: Solve for x
    x = 215,637,403,100.94/515,219.40
  6. Step 6: Final answer
    x = 418,535.10

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.