Home / 764,429.60-1,054,925.48-420,280.08

Finding the Fourth Proportional to 764,429.60, 1,054,925.48 and 420,280.08

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Solution

The fourth proportional to 764,429.60, 1,054,925.48 and 420,280.08 is: 579,993.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,429.60 : 1,054,925.48 = 420,280.08 : x
  2. Step 2: Convert to fraction form
    764,429.60/1,054,925.48 = 420,280.08/x
  3. Step 3: Cross multiply
    764,429.60x = 1,054,925.48 × 420,280.08
  4. Step 4: Simplify right side
    764,429.60x = 443,364,165,128.44
  5. Step 5: Solve for x
    x = 443,364,165,128.44/764,429.60
  6. Step 6: Final answer
    x = 579,993.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.