Home / 716,971.59-989,433.38-390,294

Finding the Fourth Proportional to 716,971.59, 989,433.38 and 390,294

Calculator

Solution

The fourth proportional to 716,971.59, 989,433.38 and 390,294 is: 538,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,971.59 : 989,433.38 = 390,294 : x
  2. Step 2: Convert to fraction form
    716,971.59/989,433.38 = 390,294/x
  3. Step 3: Cross multiply
    716,971.59x = 989,433.38 × 390,294
  4. Step 4: Simplify right side
    716,971.59x = 386,169,911,613.72
  5. Step 5: Solve for x
    x = 386,169,911,613.72/716,971.59
  6. Step 6: Final answer
    x = 538,612.57

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.