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Finding the Fourth Proportional to 569,868.56, 782,300.53 and 489,155.96

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Solution

The fourth proportional to 569,868.56, 782,300.53 and 489,155.96 is: 671,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,868.56 : 782,300.53 = 489,155.96 : x
  2. Step 2: Convert to fraction form
    569,868.56/782,300.53 = 489,155.96/x
  3. Step 3: Cross multiply
    569,868.56x = 782,300.53 × 489,155.96
  4. Step 4: Simplify right side
    569,868.56x = 382,666,969,327.86
  5. Step 5: Solve for x
    x = 382,666,969,327.86/569,868.56
  6. Step 6: Final answer
    x = 671,500.40

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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.