Home / 764,152.45-1,054,541.28-420,020.20

Finding the Fourth Proportional to 764,152.45, 1,054,541.28 and 420,020.20

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Solution

The fourth proportional to 764,152.45, 1,054,541.28 and 420,020.20 is: 579,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,152.45 : 1,054,541.28 = 420,020.20 : x
  2. Step 2: Convert to fraction form
    764,152.45/1,054,541.28 = 420,020.20/x
  3. Step 3: Cross multiply
    764,152.45x = 1,054,541.28 × 420,020.20
  4. Step 4: Simplify right side
    764,152.45x = 442,928,639,864.50
  5. Step 5: Solve for x
    x = 442,928,639,864.50/764,152.45
  6. Step 6: Final answer
    x = 579,633.87

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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.