Home / 579,945.60-800,973.36-399,211.92

Finding the Fourth Proportional to 579,945.60, 800,973.36 and 399,211.92

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Solution

The fourth proportional to 579,945.60, 800,973.36 and 399,211.92 is: 551,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,945.60 : 800,973.36 = 399,211.92 : x
  2. Step 2: Convert to fraction form
    579,945.60/800,973.36 = 399,211.92/x
  3. Step 3: Cross multiply
    579,945.60x = 800,973.36 × 399,211.92
  4. Step 4: Simplify right side
    579,945.60x = 319,758,112,914.45
  5. Step 5: Solve for x
    x = 319,758,112,914.45/579,945.60
  6. Step 6: Final answer
    x = 551,358.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.