Home / 572,515.20-858,038.40-319,795.20

Finding the Fourth Proportional to 572,515.20, 858,038.40 and 319,795.20

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Solution

The fourth proportional to 572,515.20, 858,038.40 and 319,795.20 is: 479,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,515.20 : 858,038.40 = 319,795.20 : x
  2. Step 2: Convert to fraction form
    572,515.20/858,038.40 = 319,795.20/x
  3. Step 3: Cross multiply
    572,515.20x = 858,038.40 × 319,795.20
  4. Step 4: Simplify right side
    572,515.20x = 274,396,561,735.68
  5. Step 5: Solve for x
    x = 274,396,561,735.68/572,515.20
  6. Step 6: Final answer
    x = 479,282.58

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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.