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Finding the Fourth Proportional to 703,579.92, 970,988.82 and 428,045.26

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Solution

The fourth proportional to 703,579.92, 970,988.82 and 428,045.26 is: 590,731.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,579.92 : 970,988.82 = 428,045.26 : x
  2. Step 2: Convert to fraction form
    703,579.92/970,988.82 = 428,045.26/x
  3. Step 3: Cross multiply
    703,579.92x = 970,988.82 × 428,045.26
  4. Step 4: Simplify right side
    703,579.92x = 415,627,159,701.96
  5. Step 5: Solve for x
    x = 415,627,159,701.96/703,579.92
  6. Step 6: Final answer
    x = 590,731.98

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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.