Home / 939,720.30-1,296,814.01-510,000.42

Finding the Fourth Proportional to 939,720.30, 1,296,814.01 and 510,000.42

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Solution

The fourth proportional to 939,720.30, 1,296,814.01 and 510,000.42 is: 703,800.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,720.30 : 1,296,814.01 = 510,000.42 : x
  2. Step 2: Convert to fraction form
    939,720.30/1,296,814.01 = 510,000.42/x
  3. Step 3: Cross multiply
    939,720.30x = 1,296,814.01 × 510,000.42
  4. Step 4: Simplify right side
    939,720.30x = 661,375,687,211.88
  5. Step 5: Solve for x
    x = 661,375,687,211.88/939,720.30
  6. Step 6: Final answer
    x = 703,800.58

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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.