Home / 1,219,074-1,828,465.40-320,585.74

Finding the Fourth Proportional to 1,219,074, 1,828,465.40 and 320,585.74

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Solution

The fourth proportional to 1,219,074, 1,828,465.40 and 320,585.74 is: 480,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,074 : 1,828,465.40 = 320,585.74 : x
  2. Step 2: Convert to fraction form
    1,219,074/1,828,465.40 = 320,585.74/x
  3. Step 3: Cross multiply
    1,219,074x = 1,828,465.40 × 320,585.74
  4. Step 4: Simplify right side
    1,219,074x = 586,179,933,323.40
  5. Step 5: Solve for x
    x = 586,179,933,323.40/1,219,074
  6. Step 6: Final answer
    x = 480,840.32

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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.