Home / 781,636.32-1,078,581.90-437,451.75

Finding the Fourth Proportional to 781,636.32, 1,078,581.90 and 437,451.75

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Solution

The fourth proportional to 781,636.32, 1,078,581.90 and 437,451.75 is: 603,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,636.32 : 1,078,581.90 = 437,451.75 : x
  2. Step 2: Convert to fraction form
    781,636.32/1,078,581.90 = 437,451.75/x
  3. Step 3: Cross multiply
    781,636.32x = 1,078,581.90 × 437,451.75
  4. Step 4: Simplify right side
    781,636.32x = 471,827,539,673.33
  5. Step 5: Solve for x
    x = 471,827,539,673.33/781,636.32
  6. Step 6: Final answer
    x = 603,640.76

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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.