Home / 1,521,720.80-2,282,408.40-399,903.20

Finding the Fourth Proportional to 1,521,720.80, 2,282,408.40 and 399,903.20

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Solution

The fourth proportional to 1,521,720.80, 2,282,408.40 and 399,903.20 is: 599,809.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,720.80 : 2,282,408.40 = 399,903.20 : x
  2. Step 2: Convert to fraction form
    1,521,720.80/2,282,408.40 = 399,903.20/x
  3. Step 3: Cross multiply
    1,521,720.80x = 2,282,408.40 × 399,903.20
  4. Step 4: Simplify right side
    1,521,720.80x = 912,742,422,866.88
  5. Step 5: Solve for x
    x = 912,742,422,866.88/1,521,720.80
  6. Step 6: Final answer
    x = 599,809.39

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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.