Home / 867,117.30-1,301,259.15-393,558.90

Finding the Fourth Proportional to 867,117.30, 1,301,259.15 and 393,558.90

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Solution

The fourth proportional to 867,117.30, 1,301,259.15 and 393,558.90 is: 590,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,117.30 : 1,301,259.15 = 393,558.90 : x
  2. Step 2: Convert to fraction form
    867,117.30/1,301,259.15 = 393,558.90/x
  3. Step 3: Cross multiply
    867,117.30x = 1,301,259.15 × 393,558.90
  4. Step 4: Simplify right side
    867,117.30x = 512,122,119,688.94
  5. Step 5: Solve for x
    x = 512,122,119,688.94/867,117.30
  6. Step 6: Final answer
    x = 590,603.05

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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.