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Finding the Fourth Proportional to 554,833.96, 765,671.18 and 385,166.50

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Solution

The fourth proportional to 554,833.96, 765,671.18 and 385,166.50 is: 531,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,833.96 : 765,671.18 = 385,166.50 : x
  2. Step 2: Convert to fraction form
    554,833.96/765,671.18 = 385,166.50/x
  3. Step 3: Cross multiply
    554,833.96x = 765,671.18 × 385,166.50
  4. Step 4: Simplify right side
    554,833.96x = 294,910,884,711.46
  5. Step 5: Solve for x
    x = 294,910,884,711.46/554,833.96
  6. Step 6: Final answer
    x = 531,529.98

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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.