Home / 1,219,041.52-1,828,682.58-420,217.90

Finding the Fourth Proportional to 1,219,041.52, 1,828,682.58 and 420,217.90

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Solution

The fourth proportional to 1,219,041.52, 1,828,682.58 and 420,217.90 is: 630,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,041.52 : 1,828,682.58 = 420,217.90 : x
  2. Step 2: Convert to fraction form
    1,219,041.52/1,828,682.58 = 420,217.90/x
  3. Step 3: Cross multiply
    1,219,041.52x = 1,828,682.58 × 420,217.90
  4. Step 4: Simplify right side
    1,219,041.52x = 768,445,153,534.18
  5. Step 5: Solve for x
    x = 768,445,153,534.18/1,219,041.52
  6. Step 6: Final answer
    x = 630,368.32

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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.