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Finding the Fourth Proportional to 474,897.60, 655,358.40 and 283,910.40

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Solution

The fourth proportional to 474,897.60, 655,358.40 and 283,910.40 is: 391,796.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,897.60 : 655,358.40 = 283,910.40 : x
  2. Step 2: Convert to fraction form
    474,897.60/655,358.40 = 283,910.40/x
  3. Step 3: Cross multiply
    474,897.60x = 655,358.40 × 283,910.40
  4. Step 4: Simplify right side
    474,897.60x = 186,063,065,487.36
  5. Step 5: Solve for x
    x = 186,063,065,487.36/474,897.60
  6. Step 6: Final answer
    x = 391,796.18

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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.