Home / 679,979.60-1,019,969.40-561,784.40

Finding the Fourth Proportional to 679,979.60, 1,019,969.40 and 561,784.40

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Solution

The fourth proportional to 679,979.60, 1,019,969.40 and 561,784.40 is: 842,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,979.60 : 1,019,969.40 = 561,784.40 : x
  2. Step 2: Convert to fraction form
    679,979.60/1,019,969.40 = 561,784.40/x
  3. Step 3: Cross multiply
    679,979.60x = 1,019,969.40 × 561,784.40
  4. Step 4: Simplify right side
    679,979.60x = 573,002,897,397.36
  5. Step 5: Solve for x
    x = 573,002,897,397.36/679,979.60
  6. Step 6: Final answer
    x = 842,676.60

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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.