Home / 778,725.50-1,074,641.20-421,029.50

Finding the Fourth Proportional to 778,725.50, 1,074,641.20 and 421,029.50

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Solution

The fourth proportional to 778,725.50, 1,074,641.20 and 421,029.50 is: 581,020.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,725.50 : 1,074,641.20 = 421,029.50 : x
  2. Step 2: Convert to fraction form
    778,725.50/1,074,641.20 = 421,029.50/x
  3. Step 3: Cross multiply
    778,725.50x = 1,074,641.20 × 421,029.50
  4. Step 4: Simplify right side
    778,725.50x = 452,455,647,115.40
  5. Step 5: Solve for x
    x = 452,455,647,115.40/778,725.50
  6. Step 6: Final answer
    x = 581,020.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.