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Finding the Fourth Proportional to 554,024.46, 764,507.84 and 312,366.45

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Solution

The fourth proportional to 554,024.46, 764,507.84 and 312,366.45 is: 431,039.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,024.46 : 764,507.84 = 312,366.45 : x
  2. Step 2: Convert to fraction form
    554,024.46/764,507.84 = 312,366.45/x
  3. Step 3: Cross multiply
    554,024.46x = 764,507.84 × 312,366.45
  4. Step 4: Simplify right side
    554,024.46x = 238,806,598,416.14
  5. Step 5: Solve for x
    x = 238,806,598,416.14/554,024.46
  6. Step 6: Final answer
    x = 431,039.81

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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.