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Finding the Fourth Proportional to 614,361.88, 921,395.20 and 314,688.21

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Solution

The fourth proportional to 614,361.88, 921,395.20 and 314,688.21 is: 471,956.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,361.88 : 921,395.20 = 314,688.21 : x
  2. Step 2: Convert to fraction form
    614,361.88/921,395.20 = 314,688.21/x
  3. Step 3: Cross multiply
    614,361.88x = 921,395.20 × 314,688.21
  4. Step 4: Simplify right side
    614,361.88x = 289,952,202,538.68
  5. Step 5: Solve for x
    x = 289,952,202,538.68/614,361.88
  6. Step 6: Final answer
    x = 471,956.69

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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.