Home / 939,720.80-1,296,814.70-510,000.92

Finding the Fourth Proportional to 939,720.80, 1,296,814.70 and 510,000.92

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Solution

The fourth proportional to 939,720.80, 1,296,814.70 and 510,000.92 is: 703,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,720.80 : 1,296,814.70 = 510,000.92 : x
  2. Step 2: Convert to fraction form
    939,720.80/1,296,814.70 = 510,000.92/x
  3. Step 3: Cross multiply
    939,720.80x = 1,296,814.70 × 510,000.92
  4. Step 4: Simplify right side
    939,720.80x = 661,376,687,519.52
  5. Step 5: Solve for x
    x = 661,376,687,519.52/939,720.80
  6. Step 6: Final answer
    x = 703,801.27

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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.