Home / 939,840.64-1,296,981.56-510,120.95

Finding the Fourth Proportional to 939,840.64, 1,296,981.56 and 510,120.95

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Solution

The fourth proportional to 939,840.64, 1,296,981.56 and 510,120.95 is: 703,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,840.64 : 1,296,981.56 = 510,120.95 : x
  2. Step 2: Convert to fraction form
    939,840.64/1,296,981.56 = 510,120.95/x
  3. Step 3: Cross multiply
    939,840.64x = 1,296,981.56 × 510,120.95
  4. Step 4: Simplify right side
    939,840.64x = 661,617,460,310.08
  5. Step 5: Solve for x
    x = 661,617,460,310.08/939,840.64
  6. Step 6: Final answer
    x = 703,967.71

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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.