Home / 871,703.56-1,307,509.26-512,072.20

Finding the Fourth Proportional to 871,703.56, 1,307,509.26 and 512,072.20

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Solution

The fourth proportional to 871,703.56, 1,307,509.26 and 512,072.20 is: 768,081.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,703.56 : 1,307,509.26 = 512,072.20 : x
  2. Step 2: Convert to fraction form
    871,703.56/1,307,509.26 = 512,072.20/x
  3. Step 3: Cross multiply
    871,703.56x = 1,307,509.26 × 512,072.20
  4. Step 4: Simplify right side
    871,703.56x = 669,539,143,288.57
  5. Step 5: Solve for x
    x = 669,539,143,288.57/871,703.56
  6. Step 6: Final answer
    x = 768,081.23

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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.