Home / 764,440.88-1,054,929.08-420,282.66

Finding the Fourth Proportional to 764,440.88, 1,054,929.08 and 420,282.66

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Solution

The fourth proportional to 764,440.88, 1,054,929.08 and 420,282.66 is: 579,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,440.88 : 1,054,929.08 = 420,282.66 : x
  2. Step 2: Convert to fraction form
    764,440.88/1,054,929.08 = 420,282.66/x
  3. Step 3: Cross multiply
    764,440.88x = 1,054,929.08 × 420,282.66
  4. Step 4: Simplify right side
    764,440.88x = 443,368,398,926.47
  5. Step 5: Solve for x
    x = 443,368,398,926.47/764,440.88
  6. Step 6: Final answer
    x = 579,990.44

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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.