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Finding the Fourth Proportional to 579,505.60, 869,258.40 and 355,556.80

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Solution

The fourth proportional to 579,505.60, 869,258.40 and 355,556.80 is: 533,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,505.60 : 869,258.40 = 355,556.80 : x
  2. Step 2: Convert to fraction form
    579,505.60/869,258.40 = 355,556.80/x
  3. Step 3: Cross multiply
    579,505.60x = 869,258.40 × 355,556.80
  4. Step 4: Simplify right side
    579,505.60x = 309,070,735,077.12
  5. Step 5: Solve for x
    x = 309,070,735,077.12/579,505.60
  6. Step 6: Final answer
    x = 533,335.20

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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.