Home / 939,607.10-1,296,657.78-509,887.23

Finding the Fourth Proportional to 939,607.10, 1,296,657.78 and 509,887.23

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Solution

The fourth proportional to 939,607.10, 1,296,657.78 and 509,887.23 is: 703,644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,607.10 : 1,296,657.78 = 509,887.23 : x
  2. Step 2: Convert to fraction form
    939,607.10/1,296,657.78 = 509,887.23/x
  3. Step 3: Cross multiply
    939,607.10x = 1,296,657.78 × 509,887.23
  4. Step 4: Simplify right side
    939,607.10x = 661,149,243,702.15
  5. Step 5: Solve for x
    x = 661,149,243,702.15/939,607.10
  6. Step 6: Final answer
    x = 703,644.37

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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.