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Finding the Fourth Proportional to 474,910.40, 712,365.60 and 316,020.80

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Solution

The fourth proportional to 474,910.40, 712,365.60 and 316,020.80 is: 474,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,910.40 : 712,365.60 = 316,020.80 : x
  2. Step 2: Convert to fraction form
    474,910.40/712,365.60 = 316,020.80/x
  3. Step 3: Cross multiply
    474,910.40x = 712,365.60 × 316,020.80
  4. Step 4: Simplify right side
    474,910.40x = 225,122,346,804.48
  5. Step 5: Solve for x
    x = 225,122,346,804.48/474,910.40
  6. Step 6: Final answer
    x = 474,031.20

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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.