Home / 867,147.13-1,196,663.04-485,247.72

Finding the Fourth Proportional to 867,147.13, 1,196,663.04 and 485,247.72

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Solution

The fourth proportional to 867,147.13, 1,196,663.04 and 485,247.72 is: 669,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,147.13 : 1,196,663.04 = 485,247.72 : x
  2. Step 2: Convert to fraction form
    867,147.13/1,196,663.04 = 485,247.72/x
  3. Step 3: Cross multiply
    867,147.13x = 1,196,663.04 × 485,247.72
  4. Step 4: Simplify right side
    867,147.13x = 580,678,009,342.03
  5. Step 5: Solve for x
    x = 580,678,009,342.03/867,147.13
  6. Step 6: Final answer
    x = 669,641.85

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Double scale
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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.