Home / 521,106.40-781,659.60-205,522.30

Finding the Fourth Proportional to 521,106.40, 781,659.60 and 205,522.30

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Solution

The fourth proportional to 521,106.40, 781,659.60 and 205,522.30 is: 308,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,106.40 : 781,659.60 = 205,522.30 : x
  2. Step 2: Convert to fraction form
    521,106.40/781,659.60 = 205,522.30/x
  3. Step 3: Cross multiply
    521,106.40x = 781,659.60 × 205,522.30
  4. Step 4: Simplify right side
    521,106.40x = 160,648,478,809.08
  5. Step 5: Solve for x
    x = 160,648,478,809.08/521,106.40
  6. Step 6: Final answer
    x = 308,283.45

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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.