Home / 939,360.94-1,296,320.43-509,640.96

Finding the Fourth Proportional to 939,360.94, 1,296,320.43 and 509,640.96

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Solution

The fourth proportional to 939,360.94, 1,296,320.43 and 509,640.96 is: 703,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,360.94 : 1,296,320.43 = 509,640.96 : x
  2. Step 2: Convert to fraction form
    939,360.94/1,296,320.43 = 509,640.96/x
  3. Step 3: Cross multiply
    939,360.94x = 1,296,320.43 × 509,640.96
  4. Step 4: Simplify right side
    939,360.94x = 660,657,988,412.81
  5. Step 5: Solve for x
    x = 660,657,988,412.81/939,360.94
  6. Step 6: Final answer
    x = 703,305.79

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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.