Home / 821,615.40-1,232,423.10-551,010.60

Finding the Fourth Proportional to 821,615.40, 1,232,423.10 and 551,010.60

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Solution

The fourth proportional to 821,615.40, 1,232,423.10 and 551,010.60 is: 826,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,615.40 : 1,232,423.10 = 551,010.60 : x
  2. Step 2: Convert to fraction form
    821,615.40/1,232,423.10 = 551,010.60/x
  3. Step 3: Cross multiply
    821,615.40x = 1,232,423.10 × 551,010.60
  4. Step 4: Simplify right side
    821,615.40x = 679,078,191,784.86
  5. Step 5: Solve for x
    x = 679,078,191,784.86/821,615.40
  6. Step 6: Final answer
    x = 826,515.90

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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.