Home / 1,225,409.20-1,690,814.40-716,013.12

Finding the Fourth Proportional to 1,225,409.20, 1,690,814.40 and 716,013.12

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Solution

The fourth proportional to 1,225,409.20, 1,690,814.40 and 716,013.12 is: 987,951.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,409.20 : 1,690,814.40 = 716,013.12 : x
  2. Step 2: Convert to fraction form
    1,225,409.20/1,690,814.40 = 716,013.12/x
  3. Step 3: Cross multiply
    1,225,409.20x = 1,690,814.40 × 716,013.12
  4. Step 4: Simplify right side
    1,225,409.20x = 1,210,645,293,884.93
  5. Step 5: Solve for x
    x = 1,210,645,293,884.93/1,225,409.20
  6. Step 6: Final answer
    x = 987,951.86

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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.