Home / 920,330.37-1,380,443.63-407,847.91

Finding the Fourth Proportional to 920,330.37, 1,380,443.63 and 407,847.91

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Solution

The fourth proportional to 920,330.37, 1,380,443.63 and 407,847.91 is: 611,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,330.37 : 1,380,443.63 = 407,847.91 : x
  2. Step 2: Convert to fraction form
    920,330.37/1,380,443.63 = 407,847.91/x
  3. Step 3: Cross multiply
    920,330.37x = 1,380,443.63 × 407,847.91
  4. Step 4: Simplify right side
    920,330.37x = 563,011,048,760.44
  5. Step 5: Solve for x
    x = 563,011,048,760.44/920,330.37
  6. Step 6: Final answer
    x = 611,748.85

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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.