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Finding the Fourth Proportional to 508,427.96, 700,283.70 and 378,951.50

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Solution

The fourth proportional to 508,427.96, 700,283.70 and 378,951.50 is: 521,949.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,427.96 : 700,283.70 = 378,951.50 : x
  2. Step 2: Convert to fraction form
    508,427.96/700,283.70 = 378,951.50/x
  3. Step 3: Cross multiply
    508,427.96x = 700,283.70 × 378,951.50
  4. Step 4: Simplify right side
    508,427.96x = 265,373,555,039.13
  5. Step 5: Solve for x
    x = 265,373,555,039.13/508,427.96
  6. Step 6: Final answer
    x = 521,949.18

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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.