Home / 1,918,915.65-2,878,367.81-781,409.97

Finding the Fourth Proportional to 1,918,915.65, 2,878,367.81 and 781,409.97

Calculator

Solution

The fourth proportional to 1,918,915.65, 2,878,367.81 and 781,409.97 is: 1,172,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,915.65 : 2,878,367.81 = 781,409.97 : x
  2. Step 2: Convert to fraction form
    1,918,915.65/2,878,367.81 = 781,409.97/x
  3. Step 3: Cross multiply
    1,918,915.65x = 2,878,367.81 × 781,409.97
  4. Step 4: Simplify right side
    1,918,915.65x = 2,249,185,300,154.02
  5. Step 5: Solve for x
    x = 2,249,185,300,154.02/1,918,915.65
  6. Step 6: Final answer
    x = 1,172,112.65

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.