Home / 818,364.56-1,226,759.49-419,193.32

Finding the Fourth Proportional to 818,364.56, 1,226,759.49 and 419,193.32

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Solution

The fourth proportional to 818,364.56, 1,226,759.49 and 419,193.32 is: 628,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,364.56 : 1,226,759.49 = 419,193.32 : x
  2. Step 2: Convert to fraction form
    818,364.56/1,226,759.49 = 419,193.32/x
  3. Step 3: Cross multiply
    818,364.56x = 1,226,759.49 × 419,193.32
  4. Step 4: Simplify right side
    818,364.56x = 514,249,377,320.81
  5. Step 5: Solve for x
    x = 514,249,377,320.81/818,364.56
  6. Step 6: Final answer
    x = 628,386.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.