Home / 718,744,212.04-991,867,014.18-388,719,351

Finding the Fourth Proportional to 718,744,212.04, 991,867,014.18 and 388,719,351

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Solution

The fourth proportional to 718,744,212.04, 991,867,014.18 and 388,719,351 is: 536,432,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,744,212.04 : 991,867,014.18 = 388,719,351 : x
  2. Step 2: Convert to fraction form
    718,744,212.04/991,867,014.18 = 388,719,351/x
  3. Step 3: Cross multiply
    718,744,212.04x = 991,867,014.18 × 388,719,351
  4. Step 4: Simplify right side
    718,744,212.04x = 385,557,902,030,357,376
  5. Step 5: Solve for x
    x = 385,557,902,030,357,376/718,744,212.04
  6. Step 6: Final answer
    x = 536,432,705.23

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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.