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Finding the Fourth Proportional to 550,679.63, 760,017.05 and 305,720.61

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Solution

The fourth proportional to 550,679.63, 760,017.05 and 305,720.61 is: 421,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,679.63 : 760,017.05 = 305,720.61 : x
  2. Step 2: Convert to fraction form
    550,679.63/760,017.05 = 305,720.61/x
  3. Step 3: Cross multiply
    550,679.63x = 760,017.05 × 305,720.61
  4. Step 4: Simplify right side
    550,679.63x = 232,352,874,607.80
  5. Step 5: Solve for x
    x = 232,352,874,607.80/550,679.63
  6. Step 6: Final answer
    x = 421,938.39

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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.