Home / 764,485.80-1,054,898.73-420,264.96

Finding the Fourth Proportional to 764,485.80, 1,054,898.73 and 420,264.96

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Solution

The fourth proportional to 764,485.80, 1,054,898.73 and 420,264.96 is: 579,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,485.80 : 1,054,898.73 = 420,264.96 : x
  2. Step 2: Convert to fraction form
    764,485.80/1,054,898.73 = 420,264.96/x
  3. Step 3: Cross multiply
    764,485.80x = 1,054,898.73 × 420,264.96
  4. Step 4: Simplify right side
    764,485.80x = 443,336,972,567.50
  5. Step 5: Solve for x
    x = 443,336,972,567.50/764,485.80
  6. Step 6: Final answer
    x = 579,915.25

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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.