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Finding the Fourth Proportional to 610,863.90, 842,952.06 and 338,931.06

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Solution

The fourth proportional to 610,863.90, 842,952.06 and 338,931.06 is: 467,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,863.90 : 842,952.06 = 338,931.06 : x
  2. Step 2: Convert to fraction form
    610,863.90/842,952.06 = 338,931.06/x
  3. Step 3: Cross multiply
    610,863.90x = 842,952.06 × 338,931.06
  4. Step 4: Simplify right side
    610,863.90x = 285,702,635,224.98
  5. Step 5: Solve for x
    x = 285,702,635,224.98/610,863.90
  6. Step 6: Final answer
    x = 467,702.60

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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.