Home / 857,686.60-1,286,529.90-385,294.60

Finding the Fourth Proportional to 857,686.60, 1,286,529.90 and 385,294.60

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Solution

The fourth proportional to 857,686.60, 1,286,529.90 and 385,294.60 is: 577,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,686.60 : 1,286,529.90 = 385,294.60 : x
  2. Step 2: Convert to fraction form
    857,686.60/1,286,529.90 = 385,294.60/x
  3. Step 3: Cross multiply
    857,686.60x = 1,286,529.90 × 385,294.60
  4. Step 4: Simplify right side
    857,686.60x = 495,693,023,208.54
  5. Step 5: Solve for x
    x = 495,693,023,208.54/857,686.60
  6. Step 6: Final answer
    x = 577,941.90

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Similar ratio
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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.