Home / 942,720.38-1,300,981.50-513,028.22

Finding the Fourth Proportional to 942,720.38, 1,300,981.50 and 513,028.22

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Solution

The fourth proportional to 942,720.38, 1,300,981.50 and 513,028.22 is: 707,993.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,720.38 : 1,300,981.50 = 513,028.22 : x
  2. Step 2: Convert to fraction form
    942,720.38/1,300,981.50 = 513,028.22/x
  3. Step 3: Cross multiply
    942,720.38x = 1,300,981.50 × 513,028.22
  4. Step 4: Simplify right side
    942,720.38x = 667,440,223,197.93
  5. Step 5: Solve for x
    x = 667,440,223,197.93/942,720.38
  6. Step 6: Final answer
    x = 707,993.84

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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.