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Finding the Fourth Proportional to 572,124.28, 789,568.40 and 317,475.48

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Solution

The fourth proportional to 572,124.28, 789,568.40 and 317,475.48 is: 438,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,124.28 : 789,568.40 = 317,475.48 : x
  2. Step 2: Convert to fraction form
    572,124.28/789,568.40 = 317,475.48/x
  3. Step 3: Cross multiply
    572,124.28x = 789,568.40 × 317,475.48
  4. Step 4: Simplify right side
    572,124.28x = 250,668,606,782.83
  5. Step 5: Solve for x
    x = 250,668,606,782.83/572,124.28
  6. Step 6: Final answer
    x = 438,136.63

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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.