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Finding the Fourth Proportional to 670,481.72, 999,406.42 and 616,673.34

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Solution

The fourth proportional to 670,481.72, 999,406.42 and 616,673.34 is: 919,200.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,481.72 : 999,406.42 = 616,673.34 : x
  2. Step 2: Convert to fraction form
    670,481.72/999,406.42 = 616,673.34/x
  3. Step 3: Cross multiply
    670,481.72x = 999,406.42 × 616,673.34
  4. Step 4: Simplify right side
    670,481.72x = 616,307,295,038.84
  5. Step 5: Solve for x
    x = 616,307,295,038.84/670,481.72
  6. Step 6: Final answer
    x = 919,200.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.