Home / 764,337.32-1,054,798.91-420,187.75

Finding the Fourth Proportional to 764,337.32, 1,054,798.91 and 420,187.75

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Solution

The fourth proportional to 764,337.32, 1,054,798.91 and 420,187.75 is: 579,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,337.32 : 1,054,798.91 = 420,187.75 : x
  2. Step 2: Convert to fraction form
    764,337.32/1,054,798.91 = 420,187.75/x
  3. Step 3: Cross multiply
    764,337.32x = 1,054,798.91 × 420,187.75
  4. Step 4: Simplify right side
    764,337.32x = 443,213,580,695.35
  5. Step 5: Solve for x
    x = 443,213,580,695.35/764,337.32
  6. Step 6: Final answer
    x = 579,866.47

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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.