Home / 819,678.96-1,131,161.88-457,125.72

Finding the Fourth Proportional to 819,678.96, 1,131,161.88 and 457,125.72

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Solution

The fourth proportional to 819,678.96, 1,131,161.88 and 457,125.72 is: 630,836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,678.96 : 1,131,161.88 = 457,125.72 : x
  2. Step 2: Convert to fraction form
    819,678.96/1,131,161.88 = 457,125.72/x
  3. Step 3: Cross multiply
    819,678.96x = 1,131,161.88 × 457,125.72
  4. Step 4: Simplify right side
    819,678.96x = 517,083,188,831.55
  5. Step 5: Solve for x
    x = 517,083,188,831.55/819,678.96
  6. Step 6: Final answer
    x = 630,836.23

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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.