Home / 764,356.40-1,146,560.88-343,633.76

Finding the Fourth Proportional to 764,356.40, 1,146,560.88 and 343,633.76

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Solution

The fourth proportional to 764,356.40, 1,146,560.88 and 343,633.76 is: 515,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,356.40 : 1,146,560.88 = 343,633.76 : x
  2. Step 2: Convert to fraction form
    764,356.40/1,146,560.88 = 343,633.76/x
  3. Step 3: Cross multiply
    764,356.40x = 1,146,560.88 × 343,633.76
  4. Step 4: Simplify right side
    764,356.40x = 393,997,026,263.31
  5. Step 5: Solve for x
    x = 393,997,026,263.31/764,356.40
  6. Step 6: Final answer
    x = 515,462.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.