Home / 781,453.72-1,078,097.78-490,894.52

Finding the Fourth Proportional to 781,453.72, 1,078,097.78 and 490,894.52

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Solution

The fourth proportional to 781,453.72, 1,078,097.78 and 490,894.52 is: 677,240.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,453.72 : 1,078,097.78 = 490,894.52 : x
  2. Step 2: Convert to fraction form
    781,453.72/1,078,097.78 = 490,894.52/x
  3. Step 3: Cross multiply
    781,453.72x = 1,078,097.78 × 490,894.52
  4. Step 4: Simplify right side
    781,453.72x = 529,232,292,226.17
  5. Step 5: Solve for x
    x = 529,232,292,226.17/781,453.72
  6. Step 6: Final answer
    x = 677,240.74

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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.