Home / 1,078,115.20-1,615,228.80-515,910.40

Finding the Fourth Proportional to 1,078,115.20, 1,615,228.80 and 515,910.40

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Solution

The fourth proportional to 1,078,115.20, 1,615,228.80 and 515,910.40 is: 772,935.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,115.20 : 1,615,228.80 = 515,910.40 : x
  2. Step 2: Convert to fraction form
    1,078,115.20/1,615,228.80 = 515,910.40/x
  3. Step 3: Cross multiply
    1,078,115.20x = 1,615,228.80 × 515,910.40
  4. Step 4: Simplify right side
    1,078,115.20x = 833,313,336,299.52
  5. Step 5: Solve for x
    x = 833,313,336,299.52/1,078,115.20
  6. Step 6: Final answer
    x = 772,935.34

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Double scale
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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.