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Finding the Fourth Proportional to 515,252.70, 772,879.05 and 355,820.40

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Solution

The fourth proportional to 515,252.70, 772,879.05 and 355,820.40 is: 533,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,252.70 : 772,879.05 = 355,820.40 : x
  2. Step 2: Convert to fraction form
    515,252.70/772,879.05 = 355,820.40/x
  3. Step 3: Cross multiply
    515,252.70x = 772,879.05 × 355,820.40
  4. Step 4: Simplify right side
    515,252.70x = 275,006,132,722.62
  5. Step 5: Solve for x
    x = 275,006,132,722.62/515,252.70
  6. Step 6: Final answer
    x = 533,730.60

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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.