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Finding the Fourth Proportional to 504,279.20, 696,023.88 and 313,436.72

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Solution

The fourth proportional to 504,279.20, 696,023.88 and 313,436.72 is: 432,616.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,279.20 : 696,023.88 = 313,436.72 : x
  2. Step 2: Convert to fraction form
    504,279.20/696,023.88 = 313,436.72/x
  3. Step 3: Cross multiply
    504,279.20x = 696,023.88 × 313,436.72
  4. Step 4: Simplify right side
    504,279.20x = 218,159,441,988.87
  5. Step 5: Solve for x
    x = 218,159,441,988.87/504,279.20
  6. Step 6: Final answer
    x = 432,616.38

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1.5x scale

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.