Home / 819,648.90-1,131,120.42-457,095.69

Finding the Fourth Proportional to 819,648.90, 1,131,120.42 and 457,095.69

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Solution

The fourth proportional to 819,648.90, 1,131,120.42 and 457,095.69 is: 630,794.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,648.90 : 1,131,120.42 = 457,095.69 : x
  2. Step 2: Convert to fraction form
    819,648.90/1,131,120.42 = 457,095.69/x
  3. Step 3: Cross multiply
    819,648.90x = 1,131,120.42 × 457,095.69
  4. Step 4: Simplify right side
    819,648.90x = 517,030,268,852.99
  5. Step 5: Solve for x
    x = 517,030,268,852.99/819,648.90
  6. Step 6: Final answer
    x = 630,794.81

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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.