Home / 646,143.41-891,613.51-374,298.64

Finding the Fourth Proportional to 646,143.41, 891,613.51 and 374,298.64

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Solution

The fourth proportional to 646,143.41, 891,613.51 and 374,298.64 is: 516,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,143.41 : 891,613.51 = 374,298.64 : x
  2. Step 2: Convert to fraction form
    646,143.41/891,613.51 = 374,298.64/x
  3. Step 3: Cross multiply
    646,143.41x = 891,613.51 × 374,298.64
  4. Step 4: Simplify right side
    646,143.41x = 333,729,721,033.85
  5. Step 5: Solve for x
    x = 333,729,721,033.85/646,143.41
  6. Step 6: Final answer
    x = 516,494.81

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1.5x scale

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.