Home / 646,287.76-891,741.92-374,257.76

Finding the Fourth Proportional to 646,287.76, 891,741.92 and 374,257.76

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Solution

The fourth proportional to 646,287.76, 891,741.92 and 374,257.76 is: 516,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,287.76 : 891,741.92 = 374,257.76 : x
  2. Step 2: Convert to fraction form
    646,287.76/891,741.92 = 374,257.76/x
  3. Step 3: Cross multiply
    646,287.76x = 891,741.92 × 374,257.76
  4. Step 4: Simplify right side
    646,287.76x = 333,741,333,477.30
  5. Step 5: Solve for x
    x = 333,741,333,477.30/646,287.76
  6. Step 6: Final answer
    x = 516,397.42

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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.