Home / 764,442.29-1,054,931.02-420,284.07

Finding the Fourth Proportional to 764,442.29, 1,054,931.02 and 420,284.07

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Solution

The fourth proportional to 764,442.29, 1,054,931.02 and 420,284.07 is: 579,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,442.29 : 1,054,931.02 = 420,284.07 : x
  2. Step 2: Convert to fraction form
    764,442.29/1,054,931.02 = 420,284.07/x
  3. Step 3: Cross multiply
    764,442.29x = 1,054,931.02 × 420,284.07
  4. Step 4: Simplify right side
    764,442.29x = 443,370,701,604.14
  5. Step 5: Solve for x
    x = 443,370,701,604.14/764,442.29
  6. Step 6: Final answer
    x = 579,992.38

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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.