Home / 828,004.70-1,142,767.49-465,458.42

Finding the Fourth Proportional to 828,004.70, 1,142,767.49 and 465,458.42

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Solution

The fourth proportional to 828,004.70, 1,142,767.49 and 465,458.42 is: 642,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,004.70 : 1,142,767.49 = 465,458.42 : x
  2. Step 2: Convert to fraction form
    828,004.70/1,142,767.49 = 465,458.42/x
  3. Step 3: Cross multiply
    828,004.70x = 1,142,767.49 × 465,458.42
  4. Step 4: Simplify right side
    828,004.70x = 531,910,750,322.77
  5. Step 5: Solve for x
    x = 531,910,750,322.77/828,004.70
  6. Step 6: Final answer
    x = 642,400.64

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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.