Home / 516,408,500.98-712,658,666.91-281,474,378.11

Finding the Fourth Proportional to 516,408,500.98, 712,658,666.91 and 281,474,378.11

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Solution

The fourth proportional to 516,408,500.98, 712,658,666.91 and 281,474,378.11 is: 388,442,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,408,500.98 : 712,658,666.91 = 281,474,378.11 : x
  2. Step 2: Convert to fraction form
    516,408,500.98/712,658,666.91 = 281,474,378.11/x
  3. Step 3: Cross multiply
    516,408,500.98x = 712,658,666.91 × 281,474,378.11
  4. Step 4: Simplify right side
    516,408,500.98x = 200,595,155,073,193,888
  5. Step 5: Solve for x
    x = 200,595,155,073,193,888/516,408,500.98
  6. Step 6: Final answer
    x = 388,442,782.59

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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.