Home / 765,520.39-1,056,402.70-479,198.35

Finding the Fourth Proportional to 765,520.39, 1,056,402.70 and 479,198.35

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Solution

The fourth proportional to 765,520.39, 1,056,402.70 and 479,198.35 is: 661,284.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,520.39 : 1,056,402.70 = 479,198.35 : x
  2. Step 2: Convert to fraction form
    765,520.39/1,056,402.70 = 479,198.35/x
  3. Step 3: Cross multiply
    765,520.39x = 1,056,402.70 × 479,198.35
  4. Step 4: Simplify right side
    765,520.39x = 506,226,430,775.55
  5. Step 5: Solve for x
    x = 506,226,430,775.55/765,520.39
  6. Step 6: Final answer
    x = 661,284.06

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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.