Home / 821,628.20-1,230,368.70-655,740.20

Finding the Fourth Proportional to 821,628.20, 1,230,368.70 and 655,740.20

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Solution

The fourth proportional to 821,628.20, 1,230,368.70 and 655,740.20 is: 981,955.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,628.20 : 1,230,368.70 = 655,740.20 : x
  2. Step 2: Convert to fraction form
    821,628.20/1,230,368.70 = 655,740.20/x
  3. Step 3: Cross multiply
    821,628.20x = 1,230,368.70 × 655,740.20
  4. Step 4: Simplify right side
    821,628.20x = 806,802,217,411.74
  5. Step 5: Solve for x
    x = 806,802,217,411.74/821,628.20
  6. Step 6: Final answer
    x = 981,955.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.