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Finding the Fourth Proportional to 710,734.83, 980,799.46 and 388,447.21

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Solution

The fourth proportional to 710,734.83, 980,799.46 and 388,447.21 is: 536,049.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,734.83 : 980,799.46 = 388,447.21 : x
  2. Step 2: Convert to fraction form
    710,734.83/980,799.46 = 388,447.21/x
  3. Step 3: Cross multiply
    710,734.83x = 980,799.46 × 388,447.21
  4. Step 4: Simplify right side
    710,734.83x = 380,988,813,806.51
  5. Step 5: Solve for x
    x = 380,988,813,806.51/710,734.83
  6. Step 6: Final answer
    x = 536,049.17

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1.5x scale

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.