Home / 505,307,115.10-757,960,672.65-431,330,527.90

Finding the Fourth Proportional to 505,307,115.10, 757,960,672.65 and 431,330,527.90

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Solution

The fourth proportional to 505,307,115.10, 757,960,672.65 and 431,330,527.90 is: 646,995,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,307,115.10 : 757,960,672.65 = 431,330,527.90 : x
  2. Step 2: Convert to fraction form
    505,307,115.10/757,960,672.65 = 431,330,527.90/x
  3. Step 3: Cross multiply
    505,307,115.10x = 757,960,672.65 × 431,330,527.90
  4. Step 4: Simplify right side
    505,307,115.10x = 326,931,577,061,563,584
  5. Step 5: Solve for x
    x = 326,931,577,061,563,584/505,307,115.10
  6. Step 6: Final answer
    x = 646,995,791.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.