Home / 819,390.83-1,131,009.35-475,313.76

Finding the Fourth Proportional to 819,390.83, 1,131,009.35 and 475,313.76

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Solution

The fourth proportional to 819,390.83, 1,131,009.35 and 475,313.76 is: 656,078.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,390.83 : 1,131,009.35 = 475,313.76 : x
  2. Step 2: Convert to fraction form
    819,390.83/1,131,009.35 = 475,313.76/x
  3. Step 3: Cross multiply
    819,390.83x = 1,131,009.35 × 475,313.76
  4. Step 4: Simplify right side
    819,390.83x = 537,584,304,367.09
  5. Step 5: Solve for x
    x = 537,584,304,367.09/819,390.83
  6. Step 6: Final answer
    x = 656,078.01

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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.