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Finding the Fourth Proportional to 569,976.96, 786,047.04 and 489,378.72

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Solution

The fourth proportional to 569,976.96, 786,047.04 and 489,378.72 is: 674,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,976.96 : 786,047.04 = 489,378.72 : x
  2. Step 2: Convert to fraction form
    569,976.96/786,047.04 = 489,378.72/x
  3. Step 3: Cross multiply
    569,976.96x = 786,047.04 × 489,378.72
  4. Step 4: Simplify right side
    569,976.96x = 384,674,694,294.99
  5. Step 5: Solve for x
    x = 384,674,694,294.99/569,976.96
  6. Step 6: Final answer
    x = 674,895.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.