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Finding the Fourth Proportional to 610,673.49, 842,830.29 and 338,828.85

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Solution

The fourth proportional to 610,673.49, 842,830.29 and 338,828.85 is: 467,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,673.49 : 842,830.29 = 338,828.85 : x
  2. Step 2: Convert to fraction form
    610,673.49/842,830.29 = 338,828.85/x
  3. Step 3: Cross multiply
    610,673.49x = 842,830.29 × 338,828.85
  4. Step 4: Simplify right side
    610,673.49x = 285,575,217,905.87
  5. Step 5: Solve for x
    x = 285,575,217,905.87/610,673.49
  6. Step 6: Final answer
    x = 467,639.78

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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.