Home / 939,579.21-1,296,622.80-509,859.45

Finding the Fourth Proportional to 939,579.21, 1,296,622.80 and 509,859.45

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Solution

The fourth proportional to 939,579.21, 1,296,622.80 and 509,859.45 is: 703,607.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,579.21 : 1,296,622.80 = 509,859.45 : x
  2. Step 2: Convert to fraction form
    939,579.21/1,296,622.80 = 509,859.45/x
  3. Step 3: Cross multiply
    939,579.21x = 1,296,622.80 × 509,859.45
  4. Step 4: Simplify right side
    939,579.21x = 661,095,387,665.46
  5. Step 5: Solve for x
    x = 661,095,387,665.46/939,579.21
  6. Step 6: Final answer
    x = 703,607.93

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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.