Home / 679,945.20-1,019,917.80-455,996.40

Finding the Fourth Proportional to 679,945.20, 1,019,917.80 and 455,996.40

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Solution

The fourth proportional to 679,945.20, 1,019,917.80 and 455,996.40 is: 683,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,945.20 : 1,019,917.80 = 455,996.40 : x
  2. Step 2: Convert to fraction form
    679,945.20/1,019,917.80 = 455,996.40/x
  3. Step 3: Cross multiply
    679,945.20x = 1,019,917.80 × 455,996.40
  4. Step 4: Simplify right side
    679,945.20x = 465,078,845,095.92
  5. Step 5: Solve for x
    x = 465,078,845,095.92/679,945.20
  6. Step 6: Final answer
    x = 683,994.60

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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.