Home / 864,006.40-1,296,009.60-640,057.60

Finding the Fourth Proportional to 864,006.40, 1,296,009.60 and 640,057.60

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Solution

The fourth proportional to 864,006.40, 1,296,009.60 and 640,057.60 is: 960,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,006.40 : 1,296,009.60 = 640,057.60 : x
  2. Step 2: Convert to fraction form
    864,006.40/1,296,009.60 = 640,057.60/x
  3. Step 3: Cross multiply
    864,006.40x = 1,296,009.60 × 640,057.60
  4. Step 4: Simplify right side
    864,006.40x = 829,520,794,152.96
  5. Step 5: Solve for x
    x = 829,520,794,152.96/864,006.40
  6. Step 6: Final answer
    x = 960,086.40

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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.