Home / 1,259,897.80-1,889,846.70-512,480.20

Finding the Fourth Proportional to 1,259,897.80, 1,889,846.70 and 512,480.20

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Solution

The fourth proportional to 1,259,897.80, 1,889,846.70 and 512,480.20 is: 768,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,897.80 : 1,889,846.70 = 512,480.20 : x
  2. Step 2: Convert to fraction form
    1,259,897.80/1,889,846.70 = 512,480.20/x
  3. Step 3: Cross multiply
    1,259,897.80x = 1,889,846.70 × 512,480.20
  4. Step 4: Simplify right side
    1,259,897.80x = 968,509,014,785.34
  5. Step 5: Solve for x
    x = 968,509,014,785.34/1,259,897.80
  6. Step 6: Final answer
    x = 768,720.30

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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.