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Finding the Fourth Proportional to 484,893.80, 725,612.70 and 307,485.80

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Solution

The fourth proportional to 484,893.80, 725,612.70 and 307,485.80 is: 460,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,893.80 : 725,612.70 = 307,485.80 : x
  2. Step 2: Convert to fraction form
    484,893.80/725,612.70 = 307,485.80/x
  3. Step 3: Cross multiply
    484,893.80x = 725,612.70 × 307,485.80
  4. Step 4: Simplify right side
    484,893.80x = 223,115,601,549.66
  5. Step 5: Solve for x
    x = 223,115,601,549.66/484,893.80
  6. Step 6: Final answer
    x = 460,132.92

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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.