Home / 874,176.40-1,311,264.60-519,007.60

Finding the Fourth Proportional to 874,176.40, 1,311,264.60 and 519,007.60

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Solution

The fourth proportional to 874,176.40, 1,311,264.60 and 519,007.60 is: 778,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,176.40 : 1,311,264.60 = 519,007.60 : x
  2. Step 2: Convert to fraction form
    874,176.40/1,311,264.60 = 519,007.60/x
  3. Step 3: Cross multiply
    874,176.40x = 1,311,264.60 × 519,007.60
  4. Step 4: Simplify right side
    874,176.40x = 680,556,293,010.96
  5. Step 5: Solve for x
    x = 680,556,293,010.96/874,176.40
  6. Step 6: Final answer
    x = 778,511.40

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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.