Home / 764,437.16-1,054,923.96-420,278.94

Finding the Fourth Proportional to 764,437.16, 1,054,923.96 and 420,278.94

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Solution

The fourth proportional to 764,437.16, 1,054,923.96 and 420,278.94 is: 579,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,437.16 : 1,054,923.96 = 420,278.94 : x
  2. Step 2: Convert to fraction form
    764,437.16/1,054,923.96 = 420,278.94/x
  3. Step 3: Cross multiply
    764,437.16x = 1,054,923.96 × 420,278.94
  4. Step 4: Simplify right side
    764,437.16x = 443,362,322,113.36
  5. Step 5: Solve for x
    x = 443,362,322,113.36/764,437.16
  6. Step 6: Final answer
    x = 579,985.31

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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.