Home / 545,748.40-818,622.60-386,316.10

Finding the Fourth Proportional to 545,748.40, 818,622.60 and 386,316.10

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Solution

The fourth proportional to 545,748.40, 818,622.60 and 386,316.10 is: 579,474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,748.40 : 818,622.60 = 386,316.10 : x
  2. Step 2: Convert to fraction form
    545,748.40/818,622.60 = 386,316.10/x
  3. Step 3: Cross multiply
    545,748.40x = 818,622.60 × 386,316.10
  4. Step 4: Simplify right side
    545,748.40x = 316,247,090,203.86
  5. Step 5: Solve for x
    x = 316,247,090,203.86/545,748.40
  6. Step 6: Final answer
    x = 579,474.15

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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.