Home / 786,574.76-1,085,556.42-480,830.09

Finding the Fourth Proportional to 786,574.76, 1,085,556.42 and 480,830.09

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Solution

The fourth proportional to 786,574.76, 1,085,556.42 and 480,830.09 is: 663,596.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,574.76 : 1,085,556.42 = 480,830.09 : x
  2. Step 2: Convert to fraction form
    786,574.76/1,085,556.42 = 480,830.09/x
  3. Step 3: Cross multiply
    786,574.76x = 1,085,556.42 × 480,830.09
  4. Step 4: Simplify right side
    786,574.76x = 521,968,185,700.90
  5. Step 5: Solve for x
    x = 521,968,185,700.90/786,574.76
  6. Step 6: Final answer
    x = 663,596.41

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Double scale
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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.