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Finding the Fourth Proportional to 504,980.07, 696,887.07 and 278,640.15

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Solution

The fourth proportional to 504,980.07, 696,887.07 and 278,640.15 is: 384,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,980.07 : 696,887.07 = 278,640.15 : x
  2. Step 2: Convert to fraction form
    504,980.07/696,887.07 = 278,640.15/x
  3. Step 3: Cross multiply
    504,980.07x = 696,887.07 × 278,640.15
  4. Step 4: Simplify right side
    504,980.07x = 194,180,717,717.86
  5. Step 5: Solve for x
    x = 194,180,717,717.86/504,980.07
  6. Step 6: Final answer
    x = 384,531.45

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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.