Home / 1,390,255.05-2,085,579.93-430,786.05

Finding the Fourth Proportional to 1,390,255.05, 2,085,579.93 and 430,786.05

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Solution

The fourth proportional to 1,390,255.05, 2,085,579.93 and 430,786.05 is: 646,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,255.05 : 2,085,579.93 = 430,786.05 : x
  2. Step 2: Convert to fraction form
    1,390,255.05/2,085,579.93 = 430,786.05/x
  3. Step 3: Cross multiply
    1,390,255.05x = 2,085,579.93 × 430,786.05
  4. Step 4: Simplify right side
    1,390,255.05x = 898,438,740,003.98
  5. Step 5: Solve for x
    x = 898,438,740,003.98/1,390,255.05
  6. Step 6: Final answer
    x = 646,240.23

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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.