Home / 1,219,041.60-1,828,682.66-420,217.98

Finding the Fourth Proportional to 1,219,041.60, 1,828,682.66 and 420,217.98

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Solution

The fourth proportional to 1,219,041.60, 1,828,682.66 and 420,217.98 is: 630,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,041.60 : 1,828,682.66 = 420,217.98 : x
  2. Step 2: Convert to fraction form
    1,219,041.60/1,828,682.66 = 420,217.98/x
  3. Step 3: Cross multiply
    1,219,041.60x = 1,828,682.66 × 420,217.98
  4. Step 4: Simplify right side
    1,219,041.60x = 768,445,331,345.14
  5. Step 5: Solve for x
    x = 768,445,331,345.14/1,219,041.60
  6. Step 6: Final answer
    x = 630,368.42

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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.