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Finding the Fourth Proportional to 572,513.85, 858,205.80 and 319,915.35

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Solution

The fourth proportional to 572,513.85, 858,205.80 and 319,915.35 is: 479,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,513.85 : 858,205.80 = 319,915.35 : x
  2. Step 2: Convert to fraction form
    572,513.85/858,205.80 = 319,915.35/x
  3. Step 3: Cross multiply
    572,513.85x = 858,205.80 × 319,915.35
  4. Step 4: Simplify right side
    572,513.85x = 274,553,208,879.03
  5. Step 5: Solve for x
    x = 274,553,208,879.03/572,513.85
  6. Step 6: Final answer
    x = 479,557.32

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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.