Home / 621,829.60-931,432.20-555,344.80

Finding the Fourth Proportional to 621,829.60, 931,432.20 and 555,344.80

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Solution

The fourth proportional to 621,829.60, 931,432.20 and 555,344.80 is: 831,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,829.60 : 931,432.20 = 555,344.80 : x
  2. Step 2: Convert to fraction form
    621,829.60/931,432.20 = 555,344.80/x
  3. Step 3: Cross multiply
    621,829.60x = 931,432.20 × 555,344.80
  4. Step 4: Simplify right side
    621,829.60x = 517,266,028,822.56
  5. Step 5: Solve for x
    x = 517,266,028,822.56/621,829.60
  6. Step 6: Final answer
    x = 831,845.30

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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.