Home / 1,478,519.40-2,217,779.10-1,328,928.60

Finding the Fourth Proportional to 1,478,519.40, 2,217,779.10 and 1,328,928.60

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Solution

The fourth proportional to 1,478,519.40, 2,217,779.10 and 1,328,928.60 is: 1,993,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,519.40 : 2,217,779.10 = 1,328,928.60 : x
  2. Step 2: Convert to fraction form
    1,478,519.40/2,217,779.10 = 1,328,928.60/x
  3. Step 3: Cross multiply
    1,478,519.40x = 2,217,779.10 × 1,328,928.60
  4. Step 4: Simplify right side
    1,478,519.40x = 2,947,270,074,472.26
  5. Step 5: Solve for x
    x = 2,947,270,074,472.26/1,478,519.40
  6. Step 6: Final answer
    x = 1,993,392.90

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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.