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Finding the Fourth Proportional to 561,637.60, 842,456.40 and 461,910.40

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Solution

The fourth proportional to 561,637.60, 842,456.40 and 461,910.40 is: 692,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,637.60 : 842,456.40 = 461,910.40 : x
  2. Step 2: Convert to fraction form
    561,637.60/842,456.40 = 461,910.40/x
  3. Step 3: Cross multiply
    561,637.60x = 842,456.40 × 461,910.40
  4. Step 4: Simplify right side
    561,637.60x = 389,139,372,706.56
  5. Step 5: Solve for x
    x = 389,139,372,706.56/561,637.60
  6. Step 6: Final answer
    x = 692,865.60

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Double scale
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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.