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Finding the Fourth Proportional to 577,375.70, 865,415.55 and 277,999.70

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Solution

The fourth proportional to 577,375.70, 865,415.55 and 277,999.70 is: 416,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,375.70 : 865,415.55 = 277,999.70 : x
  2. Step 2: Convert to fraction form
    577,375.70/865,415.55 = 277,999.70/x
  3. Step 3: Cross multiply
    577,375.70x = 865,415.55 × 277,999.70
  4. Step 4: Simplify right side
    577,375.70x = 240,585,263,275.34
  5. Step 5: Solve for x
    x = 240,585,263,275.34/577,375.70
  6. Step 6: Final answer
    x = 416,687.55

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Similar ratio
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1.5x scale

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.