Home / 783,747.22-1,175,953.69-428,346.02

Finding the Fourth Proportional to 783,747.22, 1,175,953.69 and 428,346.02

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Solution

The fourth proportional to 783,747.22, 1,175,953.69 and 428,346.02 is: 642,700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,747.22 : 1,175,953.69 = 428,346.02 : x
  2. Step 2: Convert to fraction form
    783,747.22/1,175,953.69 = 428,346.02/x
  3. Step 3: Cross multiply
    783,747.22x = 1,175,953.69 × 428,346.02
  4. Step 4: Simplify right side
    783,747.22x = 503,715,082,815.81
  5. Step 5: Solve for x
    x = 503,715,082,815.81/783,747.22
  6. Step 6: Final answer
    x = 642,700.95

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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.