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Finding the Fourth Proportional to 455,957.60, 629,298.03 and 308,715.68

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Solution

The fourth proportional to 455,957.60, 629,298.03 and 308,715.68 is: 426,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,957.60 : 629,298.03 = 308,715.68 : x
  2. Step 2: Convert to fraction form
    455,957.60/629,298.03 = 308,715.68/x
  3. Step 3: Cross multiply
    455,957.60x = 629,298.03 × 308,715.68
  4. Step 4: Simplify right side
    455,957.60x = 194,274,169,254.11
  5. Step 5: Solve for x
    x = 194,274,169,254.11/455,957.60
  6. Step 6: Final answer
    x = 426,079.46

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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.