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Finding the Fourth Proportional to 569,869.56, 782,301.90 and 489,156.96

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Solution

The fourth proportional to 569,869.56, 782,301.90 and 489,156.96 is: 671,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,869.56 : 782,301.90 = 489,156.96 : x
  2. Step 2: Convert to fraction form
    569,869.56/782,301.90 = 489,156.96/x
  3. Step 3: Cross multiply
    569,869.56x = 782,301.90 × 489,156.96
  4. Step 4: Simplify right side
    569,869.56x = 382,668,419,206.22
  5. Step 5: Solve for x
    x = 382,668,419,206.22/569,869.56
  6. Step 6: Final answer
    x = 671,501.77

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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.