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Finding the Fourth Proportional to 554,009.34, 764,593.64 and 321,487.50

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Solution

The fourth proportional to 554,009.34, 764,593.64 and 321,487.50 is: 443,688.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,009.34 : 764,593.64 = 321,487.50 : x
  2. Step 2: Convert to fraction form
    554,009.34/764,593.64 = 321,487.50/x
  3. Step 3: Cross multiply
    554,009.34x = 764,593.64 × 321,487.50
  4. Step 4: Simplify right side
    554,009.34x = 245,807,296,232.06
  5. Step 5: Solve for x
    x = 245,807,296,232.06/554,009.34
  6. Step 6: Final answer
    x = 443,688.00

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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.