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Finding the Fourth Proportional to 569,963.25, 786,481.25 and 315,279.81

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Solution

The fourth proportional to 569,963.25, 786,481.25 and 315,279.81 is: 435,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,963.25 : 786,481.25 = 315,279.81 : x
  2. Step 2: Convert to fraction form
    569,963.25/786,481.25 = 315,279.81/x
  3. Step 3: Cross multiply
    569,963.25x = 786,481.25 × 315,279.81
  4. Step 4: Simplify right side
    569,963.25x = 247,961,657,492.16
  5. Step 5: Solve for x
    x = 247,961,657,492.16/569,963.25
  6. Step 6: Final answer
    x = 435,048.50

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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.