Home / 328,916.56-490,994.84-289,059.52

Finding the Fourth Proportional to 328,916.56, 490,994.84 and 289,059.52

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Solution

The fourth proportional to 328,916.56, 490,994.84 and 289,059.52 is: 431,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,916.56 : 490,994.84 = 289,059.52 : x
  2. Step 2: Convert to fraction form
    328,916.56/490,994.84 = 289,059.52/x
  3. Step 3: Cross multiply
    328,916.56x = 490,994.84 × 289,059.52
  4. Step 4: Simplify right side
    328,916.56x = 141,926,732,772.88
  5. Step 5: Solve for x
    x = 141,926,732,772.88/328,916.56
  6. Step 6: Final answer
    x = 431,497.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.