Home / 764,285.73-1,054,702.38-420,114.21

Finding the Fourth Proportional to 764,285.73, 1,054,702.38 and 420,114.21

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Solution

The fourth proportional to 764,285.73, 1,054,702.38 and 420,114.21 is: 579,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,285.73 : 1,054,702.38 = 420,114.21 : x
  2. Step 2: Convert to fraction form
    764,285.73/1,054,702.38 = 420,114.21/x
  3. Step 3: Cross multiply
    764,285.73x = 1,054,702.38 × 420,114.21
  4. Step 4: Simplify right side
    764,285.73x = 443,095,457,158.82
  5. Step 5: Solve for x
    x = 443,095,457,158.82/764,285.73
  6. Step 6: Final answer
    x = 579,751.05

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Double scale
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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.