Home / 939,700.80-1,296,796.64-509,984.64

Finding the Fourth Proportional to 939,700.80, 1,296,796.64 and 509,984.64

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Solution

The fourth proportional to 939,700.80, 1,296,796.64 and 509,984.64 is: 703,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,700.80 : 1,296,796.64 = 509,984.64 : x
  2. Step 2: Convert to fraction form
    939,700.80/1,296,796.64 = 509,984.64/x
  3. Step 3: Cross multiply
    939,700.80x = 1,296,796.64 × 509,984.64
  4. Step 4: Simplify right side
    939,700.80x = 661,346,367,603.61
  5. Step 5: Solve for x
    x = 661,346,367,603.61/939,700.80
  6. Step 6: Final answer
    x = 703,783.98

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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.