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Finding the Fourth Proportional to 569,872.07, 782,305.33 and 489,159.47

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Solution

The fourth proportional to 569,872.07, 782,305.33 and 489,159.47 is: 671,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,872.07 : 782,305.33 = 489,159.47 : x
  2. Step 2: Convert to fraction form
    569,872.07/782,305.33 = 489,159.47/x
  3. Step 3: Cross multiply
    569,872.07x = 782,305.33 × 489,159.47
  4. Step 4: Simplify right side
    569,872.07x = 382,672,060,600.98
  5. Step 5: Solve for x
    x = 382,672,060,600.98/569,872.07
  6. Step 6: Final answer
    x = 671,505.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.