Home / 1,338,139.20-2,007,208.80-439,719.60

Finding the Fourth Proportional to 1,338,139.20, 2,007,208.80 and 439,719.60

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Solution

The fourth proportional to 1,338,139.20, 2,007,208.80 and 439,719.60 is: 659,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,139.20 : 2,007,208.80 = 439,719.60 : x
  2. Step 2: Convert to fraction form
    1,338,139.20/2,007,208.80 = 439,719.60/x
  3. Step 3: Cross multiply
    1,338,139.20x = 2,007,208.80 × 439,719.60
  4. Step 4: Simplify right side
    1,338,139.20x = 882,609,050,652.48
  5. Step 5: Solve for x
    x = 882,609,050,652.48/1,338,139.20
  6. Step 6: Final answer
    x = 659,579.40

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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.