Home / 1,615,315.80-2,420,349.30-1,389,617.40

Finding the Fourth Proportional to 1,615,315.80, 2,420,349.30 and 1,389,617.40

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Solution

The fourth proportional to 1,615,315.80, 2,420,349.30 and 1,389,617.40 is: 2,082,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615,315.80 : 2,420,349.30 = 1,389,617.40 : x
  2. Step 2: Convert to fraction form
    1,615,315.80/2,420,349.30 = 1,389,617.40/x
  3. Step 3: Cross multiply
    1,615,315.80x = 2,420,349.30 × 1,389,617.40
  4. Step 4: Simplify right side
    1,615,315.80x = 3,363,359,501,357.82
  5. Step 5: Solve for x
    x = 3,363,359,501,357.82/1,615,315.80
  6. Step 6: Final answer
    x = 2,082,168.39

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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.