Home / 680,864.40-1,021,296.60-442,918.80

Finding the Fourth Proportional to 680,864.40, 1,021,296.60 and 442,918.80

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Solution

The fourth proportional to 680,864.40, 1,021,296.60 and 442,918.80 is: 664,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,864.40 : 1,021,296.60 = 442,918.80 : x
  2. Step 2: Convert to fraction form
    680,864.40/1,021,296.60 = 442,918.80/x
  3. Step 3: Cross multiply
    680,864.40x = 1,021,296.60 × 442,918.80
  4. Step 4: Simplify right side
    680,864.40x = 452,351,464,516.08
  5. Step 5: Solve for x
    x = 452,351,464,516.08/680,864.40
  6. Step 6: Final answer
    x = 664,378.20

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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.