Home / 687,419,403.46-948,719,554.98-386,054,242.42

Finding the Fourth Proportional to 687,419,403.46, 948,719,554.98 and 386,054,242.42

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Solution

The fourth proportional to 687,419,403.46, 948,719,554.98 and 386,054,242.42 is: 532,800,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,419,403.46 : 948,719,554.98 = 386,054,242.42 : x
  2. Step 2: Convert to fraction form
    687,419,403.46/948,719,554.98 = 386,054,242.42/x
  3. Step 3: Cross multiply
    687,419,403.46x = 948,719,554.98 × 386,054,242.42
  4. Step 4: Simplify right side
    687,419,403.46x = 366,257,209,066,843,456
  5. Step 5: Solve for x
    x = 366,257,209,066,843,456/687,419,403.46
  6. Step 6: Final answer
    x = 532,800,219.52

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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.