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Finding the Fourth Proportional to 613,389.32, 920,031.12 and 373,441.09

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Solution

The fourth proportional to 613,389.32, 920,031.12 and 373,441.09 is: 560,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,389.32 : 920,031.12 = 373,441.09 : x
  2. Step 2: Convert to fraction form
    613,389.32/920,031.12 = 373,441.09/x
  3. Step 3: Cross multiply
    613,389.32x = 920,031.12 × 373,441.09
  4. Step 4: Simplify right side
    613,389.32x = 343,577,424,286.72
  5. Step 5: Solve for x
    x = 343,577,424,286.72/613,389.32
  6. Step 6: Final answer
    x = 560,129.45

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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.