Home / 1,395,320.40-2,090,830.20-1,038,661.20

Finding the Fourth Proportional to 1,395,320.40, 2,090,830.20 and 1,038,661.20

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Solution

The fourth proportional to 1,395,320.40, 2,090,830.20 and 1,038,661.20 is: 1,556,391.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,320.40 : 2,090,830.20 = 1,038,661.20 : x
  2. Step 2: Convert to fraction form
    1,395,320.40/2,090,830.20 = 1,038,661.20/x
  3. Step 3: Cross multiply
    1,395,320.40x = 2,090,830.20 × 1,038,661.20
  4. Step 4: Simplify right side
    1,395,320.40x = 2,171,664,204,528.24
  5. Step 5: Solve for x
    x = 2,171,664,204,528.24/1,395,320.40
  6. Step 6: Final answer
    x = 1,556,391.07

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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.