Home / 783,731.45-1,175,930.04-428,330.28

Finding the Fourth Proportional to 783,731.45, 1,175,930.04 and 428,330.28

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Solution

The fourth proportional to 783,731.45, 1,175,930.04 and 428,330.28 is: 642,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,731.45 : 1,175,930.04 = 428,330.28 : x
  2. Step 2: Convert to fraction form
    783,731.45/1,175,930.04 = 428,330.28/x
  3. Step 3: Cross multiply
    783,731.45x = 1,175,930.04 × 428,330.28
  4. Step 4: Simplify right side
    783,731.45x = 503,686,443,293.61
  5. Step 5: Solve for x
    x = 503,686,443,293.61/783,731.45
  6. Step 6: Final answer
    x = 642,677.34

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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.