Home / 781,451.55-1,078,416.99-441,919.80

Finding the Fourth Proportional to 781,451.55, 1,078,416.99 and 441,919.80

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Solution

The fourth proportional to 781,451.55, 1,078,416.99 and 441,919.80 is: 609,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,451.55 : 1,078,416.99 = 441,919.80 : x
  2. Step 2: Convert to fraction form
    781,451.55/1,078,416.99 = 441,919.80/x
  3. Step 3: Cross multiply
    781,451.55x = 1,078,416.99 × 441,919.80
  4. Step 4: Simplify right side
    781,451.55x = 476,573,820,537.40
  5. Step 5: Solve for x
    x = 476,573,820,537.40/781,451.55
  6. Step 6: Final answer
    x = 609,857.16

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Double scale
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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.