Home / 764,171.60-1,054,567.76-420,039.41

Finding the Fourth Proportional to 764,171.60, 1,054,567.76 and 420,039.41

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Solution

The fourth proportional to 764,171.60, 1,054,567.76 and 420,039.41 is: 579,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,171.60 : 1,054,567.76 = 420,039.41 : x
  2. Step 2: Convert to fraction form
    764,171.60/1,054,567.76 = 420,039.41/x
  3. Step 3: Cross multiply
    764,171.60x = 1,054,567.76 × 420,039.41
  4. Step 4: Simplify right side
    764,171.60x = 442,960,012,342.39
  5. Step 5: Solve for x
    x = 442,960,012,342.39/764,171.60
  6. Step 6: Final answer
    x = 579,660.40

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1.5x scale

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.