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Finding the Fourth Proportional to 486,058.60, 670,491.30 and 284,815.72

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Solution

The fourth proportional to 486,058.60, 670,491.30 and 284,815.72 is: 392,887.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,058.60 : 670,491.30 = 284,815.72 : x
  2. Step 2: Convert to fraction form
    486,058.60/670,491.30 = 284,815.72/x
  3. Step 3: Cross multiply
    486,058.60x = 670,491.30 × 284,815.72
  4. Step 4: Simplify right side
    486,058.60x = 190,966,462,363.24
  5. Step 5: Solve for x
    x = 190,966,462,363.24/486,058.60
  6. Step 6: Final answer
    x = 392,887.73

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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.