Home / 621,225.20-931,837.80-397,276.40

Finding the Fourth Proportional to 621,225.20, 931,837.80 and 397,276.40

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Solution

The fourth proportional to 621,225.20, 931,837.80 and 397,276.40 is: 595,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,225.20 : 931,837.80 = 397,276.40 : x
  2. Step 2: Convert to fraction form
    621,225.20/931,837.80 = 397,276.40/x
  3. Step 3: Cross multiply
    621,225.20x = 931,837.80 × 397,276.40
  4. Step 4: Simplify right side
    621,225.20x = 370,197,166,567.92
  5. Step 5: Solve for x
    x = 370,197,166,567.92/621,225.20
  6. Step 6: Final answer
    x = 595,914.60

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Double scale
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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.