Home / 1,225,980.79-1,691,827.09-709,756.50

Finding the Fourth Proportional to 1,225,980.79, 1,691,827.09 and 709,756.50

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Solution

The fourth proportional to 1,225,980.79, 1,691,827.09 and 709,756.50 is: 979,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,980.79 : 1,691,827.09 = 709,756.50 : x
  2. Step 2: Convert to fraction form
    1,225,980.79/1,691,827.09 = 709,756.50/x
  3. Step 3: Cross multiply
    1,225,980.79x = 1,691,827.09 × 709,756.50
  4. Step 4: Simplify right side
    1,225,980.79x = 1,200,785,274,003.59
  5. Step 5: Solve for x
    x = 1,200,785,274,003.59/1,225,980.79
  6. Step 6: Final answer
    x = 979,448.69

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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.