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Finding the Fourth Proportional to 710,511.84, 980,477.19 and 388,233

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Solution

The fourth proportional to 710,511.84, 980,477.19 and 388,233 is: 535,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,511.84 : 980,477.19 = 388,233 : x
  2. Step 2: Convert to fraction form
    710,511.84/980,477.19 = 388,233/x
  3. Step 3: Cross multiply
    710,511.84x = 980,477.19 × 388,233
  4. Step 4: Simplify right side
    710,511.84x = 380,653,600,905.27
  5. Step 5: Solve for x
    x = 380,653,600,905.27/710,511.84
  6. Step 6: Final answer
    x = 535,745.61

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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.