Home / 621,129.80-931,824.30-354,672.20

Finding the Fourth Proportional to 621,129.80, 931,824.30 and 354,672.20

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Solution

The fourth proportional to 621,129.80, 931,824.30 and 354,672.20 is: 532,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,129.80 : 931,824.30 = 354,672.20 : x
  2. Step 2: Convert to fraction form
    621,129.80/931,824.30 = 354,672.20/x
  3. Step 3: Cross multiply
    621,129.80x = 931,824.30 × 354,672.20
  4. Step 4: Simplify right side
    621,129.80x = 330,492,174,494.46
  5. Step 5: Solve for x
    x = 330,492,174,494.46/621,129.80
  6. Step 6: Final answer
    x = 532,082.30

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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.