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Finding the Fourth Proportional to 553,611.50, 763,983.88 and 298,962.69

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Solution

The fourth proportional to 553,611.50, 763,983.88 and 298,962.69 is: 412,568.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,611.50 : 763,983.88 = 298,962.69 : x
  2. Step 2: Convert to fraction form
    553,611.50/763,983.88 = 298,962.69/x
  3. Step 3: Cross multiply
    553,611.50x = 763,983.88 × 298,962.69
  4. Step 4: Simplify right side
    553,611.50x = 228,402,675,881.44
  5. Step 5: Solve for x
    x = 228,402,675,881.44/553,611.50
  6. Step 6: Final answer
    x = 412,568.52

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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.