Home / 680,920.40-1,021,963.80-302,423.60

Finding the Fourth Proportional to 680,920.40, 1,021,963.80 and 302,423.60

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Solution

The fourth proportional to 680,920.40, 1,021,963.80 and 302,423.60 is: 453,894.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,920.40 : 1,021,963.80 = 302,423.60 : x
  2. Step 2: Convert to fraction form
    680,920.40/1,021,963.80 = 302,423.60/x
  3. Step 3: Cross multiply
    680,920.40x = 1,021,963.80 × 302,423.60
  4. Step 4: Simplify right side
    680,920.40x = 309,065,971,465.68
  5. Step 5: Solve for x
    x = 309,065,971,465.68/680,920.40
  6. Step 6: Final answer
    x = 453,894.42

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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.