Home / 621,008.20-931,512.30-355,287.70

Finding the Fourth Proportional to 621,008.20, 931,512.30 and 355,287.70

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Solution

The fourth proportional to 621,008.20, 931,512.30 and 355,287.70 is: 532,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,008.20 : 931,512.30 = 355,287.70 : x
  2. Step 2: Convert to fraction form
    621,008.20/931,512.30 = 355,287.70/x
  3. Step 3: Cross multiply
    621,008.20x = 931,512.30 × 355,287.70
  4. Step 4: Simplify right side
    621,008.20x = 330,954,862,588.71
  5. Step 5: Solve for x
    x = 330,954,862,588.71/621,008.20
  6. Step 6: Final answer
    x = 532,931.55

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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.