Home / 764,640.42-1,145,385.72-448,334.64

Finding the Fourth Proportional to 764,640.42, 1,145,385.72 and 448,334.64

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Solution

The fourth proportional to 764,640.42, 1,145,385.72 and 448,334.64 is: 671,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,640.42 : 1,145,385.72 = 448,334.64 : x
  2. Step 2: Convert to fraction form
    764,640.42/1,145,385.72 = 448,334.64/x
  3. Step 3: Cross multiply
    764,640.42x = 1,145,385.72 × 448,334.64
  4. Step 4: Simplify right side
    764,640.42x = 513,516,094,437.34
  5. Step 5: Solve for x
    x = 513,516,094,437.34/764,640.42
  6. Step 6: Final answer
    x = 671,578.54

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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.