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Finding the Fourth Proportional to 710,446.29, 980,364.70 and 388,087.95

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Solution

The fourth proportional to 710,446.29, 980,364.70 and 388,087.95 is: 535,533.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,446.29 : 980,364.70 = 388,087.95 : x
  2. Step 2: Convert to fraction form
    710,446.29/980,364.70 = 388,087.95/x
  3. Step 3: Cross multiply
    710,446.29x = 980,364.70 × 388,087.95
  4. Step 4: Simplify right side
    710,446.29x = 380,467,726,675.37
  5. Step 5: Solve for x
    x = 380,467,726,675.37/710,446.29
  6. Step 6: Final answer
    x = 535,533.41

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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.