Home / 1,330,021.32-1,995,312.36-431,393.16

Finding the Fourth Proportional to 1,330,021.32, 1,995,312.36 and 431,393.16

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Solution

The fourth proportional to 1,330,021.32, 1,995,312.36 and 431,393.16 is: 647,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,021.32 : 1,995,312.36 = 431,393.16 : x
  2. Step 2: Convert to fraction form
    1,330,021.32/1,995,312.36 = 431,393.16/x
  3. Step 3: Cross multiply
    1,330,021.32x = 1,995,312.36 × 431,393.16
  4. Step 4: Simplify right side
    1,330,021.32x = 860,764,104,167.46
  5. Step 5: Solve for x
    x = 860,764,104,167.46/1,330,021.32
  6. Step 6: Final answer
    x = 647,180.68

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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.