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Finding the Fourth Proportional to 510,955.67, 705,085.08 and 306,885.33

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Solution

The fourth proportional to 510,955.67, 705,085.08 and 306,885.33 is: 423,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,955.67 : 705,085.08 = 306,885.33 : x
  2. Step 2: Convert to fraction form
    510,955.67/705,085.08 = 306,885.33/x
  3. Step 3: Cross multiply
    510,955.67x = 705,085.08 × 306,885.33
  4. Step 4: Simplify right side
    510,955.67x = 216,380,267,453.88
  5. Step 5: Solve for x
    x = 216,380,267,453.88/510,955.67
  6. Step 6: Final answer
    x = 423,481.49

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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.