Home / 771,292.80-1,064,352.96-449,012.16

Finding the Fourth Proportional to 771,292.80, 1,064,352.96 and 449,012.16

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Solution

The fourth proportional to 771,292.80, 1,064,352.96 and 449,012.16 is: 619,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,292.80 : 1,064,352.96 = 449,012.16 : x
  2. Step 2: Convert to fraction form
    771,292.80/1,064,352.96 = 449,012.16/x
  3. Step 3: Cross multiply
    771,292.80x = 1,064,352.96 × 449,012.16
  4. Step 4: Simplify right side
    771,292.80x = 477,907,421,571.99
  5. Step 5: Solve for x
    x = 477,907,421,571.99/771,292.80
  6. Step 6: Final answer
    x = 619,618.67

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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.