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Finding the Fourth Proportional to 482,605.70, 666,064.68 and 278,615.84

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Solution

The fourth proportional to 482,605.70, 666,064.68 and 278,615.84 is: 384,529.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,605.70 : 666,064.68 = 278,615.84 : x
  2. Step 2: Convert to fraction form
    482,605.70/666,064.68 = 278,615.84/x
  3. Step 3: Cross multiply
    482,605.70x = 666,064.68 × 278,615.84
  4. Step 4: Simplify right side
    482,605.70x = 185,576,170,312.53
  5. Step 5: Solve for x
    x = 185,576,170,312.53/482,605.70
  6. Step 6: Final answer
    x = 384,529.59

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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.