Home / 864,004.90-1,296,007.35-545,140.30

Finding the Fourth Proportional to 864,004.90, 1,296,007.35 and 545,140.30

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Solution

The fourth proportional to 864,004.90, 1,296,007.35 and 545,140.30 is: 817,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,004.90 : 1,296,007.35 = 545,140.30 : x
  2. Step 2: Convert to fraction form
    864,004.90/1,296,007.35 = 545,140.30/x
  3. Step 3: Cross multiply
    864,004.90x = 1,296,007.35 × 545,140.30
  4. Step 4: Simplify right side
    864,004.90x = 706,505,835,581.21
  5. Step 5: Solve for x
    x = 706,505,835,581.21/864,004.90
  6. Step 6: Final answer
    x = 817,710.45

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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.