Home / 1,219,040.88-1,828,681.60-420,217.28

Finding the Fourth Proportional to 1,219,040.88, 1,828,681.60 and 420,217.28

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Solution

The fourth proportional to 1,219,040.88, 1,828,681.60 and 420,217.28 is: 630,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,040.88 : 1,828,681.60 = 420,217.28 : x
  2. Step 2: Convert to fraction form
    1,219,040.88/1,828,681.60 = 420,217.28/x
  3. Step 3: Cross multiply
    1,219,040.88x = 1,828,681.60 × 420,217.28
  4. Step 4: Simplify right side
    1,219,040.88x = 768,443,607,938.05
  5. Step 5: Solve for x
    x = 768,443,607,938.05/1,219,040.88
  6. Step 6: Final answer
    x = 630,367.38

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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.