Home / 764,434.37-1,054,920.10-420,276.15

Finding the Fourth Proportional to 764,434.37, 1,054,920.10 and 420,276.15

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Solution

The fourth proportional to 764,434.37, 1,054,920.10 and 420,276.15 is: 579,981.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,434.37 : 1,054,920.10 = 420,276.15 : x
  2. Step 2: Convert to fraction form
    764,434.37/1,054,920.10 = 420,276.15/x
  3. Step 3: Cross multiply
    764,434.37x = 1,054,920.10 × 420,276.15
  4. Step 4: Simplify right side
    764,434.37x = 443,357,758,185.62
  5. Step 5: Solve for x
    x = 443,357,758,185.62/764,434.37
  6. Step 6: Final answer
    x = 579,981.46

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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.