Home / 621,153.60-931,730.40-200,443.20

Finding the Fourth Proportional to 621,153.60, 931,730.40 and 200,443.20

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Solution

The fourth proportional to 621,153.60, 931,730.40 and 200,443.20 is: 300,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,153.60 : 931,730.40 = 200,443.20 : x
  2. Step 2: Convert to fraction form
    621,153.60/931,730.40 = 200,443.20/x
  3. Step 3: Cross multiply
    621,153.60x = 931,730.40 × 200,443.20
  4. Step 4: Simplify right side
    621,153.60x = 186,759,022,913.28
  5. Step 5: Solve for x
    x = 186,759,022,913.28/621,153.60
  6. Step 6: Final answer
    x = 300,664.80

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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.