Home / 646,074.68-891,343.91-645,078.24

Finding the Fourth Proportional to 646,074.68, 891,343.91 and 645,078.24

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Solution

The fourth proportional to 646,074.68, 891,343.91 and 645,078.24 is: 889,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,074.68 : 891,343.91 = 645,078.24 : x
  2. Step 2: Convert to fraction form
    646,074.68/891,343.91 = 645,078.24/x
  3. Step 3: Cross multiply
    646,074.68x = 891,343.91 × 645,078.24
  4. Step 4: Simplify right side
    646,074.68x = 574,986,562,310.21
  5. Step 5: Solve for x
    x = 574,986,562,310.21/646,074.68
  6. Step 6: Final answer
    x = 889,969.20

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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.