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Finding the Fourth Proportional to 572,558.20, 858,102.90 and 319,838.20

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Solution

The fourth proportional to 572,558.20, 858,102.90 and 319,838.20 is: 479,347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,558.20 : 858,102.90 = 319,838.20 : x
  2. Step 2: Convert to fraction form
    572,558.20/858,102.90 = 319,838.20/x
  3. Step 3: Cross multiply
    572,558.20x = 858,102.90 × 319,838.20
  4. Step 4: Simplify right side
    572,558.20x = 274,454,086,950.78
  5. Step 5: Solve for x
    x = 274,454,086,950.78/572,558.20
  6. Step 6: Final answer
    x = 479,347.05

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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.