Home / 680,394.21-1,020,591.32-207,075.78

Finding the Fourth Proportional to 680,394.21, 1,020,591.32 and 207,075.78

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Solution

The fourth proportional to 680,394.21, 1,020,591.32 and 207,075.78 is: 310,613.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,394.21 : 1,020,591.32 = 207,075.78 : x
  2. Step 2: Convert to fraction form
    680,394.21/1,020,591.32 = 207,075.78/x
  3. Step 3: Cross multiply
    680,394.21x = 1,020,591.32 × 207,075.78
  4. Step 4: Simplify right side
    680,394.21x = 211,339,742,614.85
  5. Step 5: Solve for x
    x = 211,339,742,614.85/680,394.21
  6. Step 6: Final answer
    x = 310,613.67

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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.