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Finding the Fourth Proportional to 710,482.34, 980,436.48 and 388,203.50

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Solution

The fourth proportional to 710,482.34, 980,436.48 and 388,203.50 is: 535,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,482.34 : 980,436.48 = 388,203.50 : x
  2. Step 2: Convert to fraction form
    710,482.34/980,436.48 = 388,203.50/x
  3. Step 3: Cross multiply
    710,482.34x = 980,436.48 × 388,203.50
  4. Step 4: Simplify right side
    710,482.34x = 380,608,873,063.68
  5. Step 5: Solve for x
    x = 380,608,873,063.68/710,482.34
  6. Step 6: Final answer
    x = 535,704.90

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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.