Home / 612,588.20-918,882.30-443,314.40

Finding the Fourth Proportional to 612,588.20, 918,882.30 and 443,314.40

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Solution

The fourth proportional to 612,588.20, 918,882.30 and 443,314.40 is: 664,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,588.20 : 918,882.30 = 443,314.40 : x
  2. Step 2: Convert to fraction form
    612,588.20/918,882.30 = 443,314.40/x
  3. Step 3: Cross multiply
    612,588.20x = 918,882.30 × 443,314.40
  4. Step 4: Simplify right side
    612,588.20x = 407,353,755,495.12
  5. Step 5: Solve for x
    x = 407,353,755,495.12/612,588.20
  6. Step 6: Final answer
    x = 664,971.60

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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.