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Finding the Fourth Proportional to 551,108.89, 760,477.77 and 309,336.04

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Solution

The fourth proportional to 551,108.89, 760,477.77 and 309,336.04 is: 426,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,108.89 : 760,477.77 = 309,336.04 : x
  2. Step 2: Convert to fraction form
    551,108.89/760,477.77 = 309,336.04/x
  3. Step 3: Cross multiply
    551,108.89x = 760,477.77 × 309,336.04
  4. Step 4: Simplify right side
    551,108.89x = 235,243,178,077.44
  5. Step 5: Solve for x
    x = 235,243,178,077.44/551,108.89
  6. Step 6: Final answer
    x = 426,854.27

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1.5x scale

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.