Home / 939,841.38-1,296,981.21-510,121.40

Finding the Fourth Proportional to 939,841.38, 1,296,981.21 and 510,121.40

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Solution

The fourth proportional to 939,841.38, 1,296,981.21 and 510,121.40 is: 703,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,841.38 : 1,296,981.21 = 510,121.40 : x
  2. Step 2: Convert to fraction form
    939,841.38/1,296,981.21 = 510,121.40/x
  3. Step 3: Cross multiply
    939,841.38x = 1,296,981.21 × 510,121.40
  4. Step 4: Simplify right side
    939,841.38x = 661,617,866,046.94
  5. Step 5: Solve for x
    x = 661,617,866,046.94/939,841.38
  6. Step 6: Final answer
    x = 703,967.58

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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.