Home / 783,731.18-1,175,929.59-428,330

Finding the Fourth Proportional to 783,731.18, 1,175,929.59 and 428,330

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Solution

The fourth proportional to 783,731.18, 1,175,929.59 and 428,330 is: 642,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,731.18 : 1,175,929.59 = 428,330 : x
  2. Step 2: Convert to fraction form
    783,731.18/1,175,929.59 = 428,330/x
  3. Step 3: Cross multiply
    783,731.18x = 1,175,929.59 × 428,330
  4. Step 4: Simplify right side
    783,731.18x = 503,685,921,284.70
  5. Step 5: Solve for x
    x = 503,685,921,284.70/783,731.18
  6. Step 6: Final answer
    x = 642,676.90

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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.