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Finding the Fourth Proportional to 616,628.40, 924,942.60 and 403,738.80

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Solution

The fourth proportional to 616,628.40, 924,942.60 and 403,738.80 is: 605,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,628.40 : 924,942.60 = 403,738.80 : x
  2. Step 2: Convert to fraction form
    616,628.40/924,942.60 = 403,738.80/x
  3. Step 3: Cross multiply
    616,628.40x = 924,942.60 × 403,738.80
  4. Step 4: Simplify right side
    616,628.40x = 373,435,215,392.88
  5. Step 5: Solve for x
    x = 373,435,215,392.88/616,628.40
  6. Step 6: Final answer
    x = 605,608.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.