Home / 827,799.78-1,142,390.61-465,293.46

Finding the Fourth Proportional to 827,799.78, 1,142,390.61 and 465,293.46

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Solution

The fourth proportional to 827,799.78, 1,142,390.61 and 465,293.46 is: 642,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,799.78 : 1,142,390.61 = 465,293.46 : x
  2. Step 2: Convert to fraction form
    827,799.78/1,142,390.61 = 465,293.46/x
  3. Step 3: Cross multiply
    827,799.78x = 1,142,390.61 × 465,293.46
  4. Step 4: Simplify right side
    827,799.78x = 531,546,879,598.41
  5. Step 5: Solve for x
    x = 531,546,879,598.41/827,799.78
  6. Step 6: Final answer
    x = 642,120.10

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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.