Home / 1,219,040.52-1,828,681.08-420,216.90

Finding the Fourth Proportional to 1,219,040.52, 1,828,681.08 and 420,216.90

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Solution

The fourth proportional to 1,219,040.52, 1,828,681.08 and 420,216.90 is: 630,366.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,040.52 : 1,828,681.08 = 420,216.90 : x
  2. Step 2: Convert to fraction form
    1,219,040.52/1,828,681.08 = 420,216.90/x
  3. Step 3: Cross multiply
    1,219,040.52x = 1,828,681.08 × 420,216.90
  4. Step 4: Simplify right side
    1,219,040.52x = 768,442,694,526.25
  5. Step 5: Solve for x
    x = 768,442,694,526.25/1,219,040.52
  6. Step 6: Final answer
    x = 630,366.82

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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.