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Finding the Fourth Proportional to 510,951.18, 705,078.77 and 307,010.69

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Solution

The fourth proportional to 510,951.18, 705,078.77 and 307,010.69 is: 423,654.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,951.18 : 705,078.77 = 307,010.69 : x
  2. Step 2: Convert to fraction form
    510,951.18/705,078.77 = 307,010.69/x
  3. Step 3: Cross multiply
    510,951.18x = 705,078.77 × 307,010.69
  4. Step 4: Simplify right side
    510,951.18x = 216,466,719,682.05
  5. Step 5: Solve for x
    x = 216,466,719,682.05/510,951.18
  6. Step 6: Final answer
    x = 423,654.41

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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.