Home / 920,783.64-1,380,812.58-447,328.92

Finding the Fourth Proportional to 920,783.64, 1,380,812.58 and 447,328.92

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Solution

The fourth proportional to 920,783.64, 1,380,812.58 and 447,328.92 is: 670,817.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,783.64 : 1,380,812.58 = 447,328.92 : x
  2. Step 2: Convert to fraction form
    920,783.64/1,380,812.58 = 447,328.92/x
  3. Step 3: Cross multiply
    920,783.64x = 1,380,812.58 × 447,328.92
  4. Step 4: Simplify right side
    920,783.64x = 617,677,400,133.81
  5. Step 5: Solve for x
    x = 617,677,400,133.81/920,783.64
  6. Step 6: Final answer
    x = 670,817.09

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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.