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Finding the Fourth Proportional to 400,009.60, 600,020.80 and 104,521.60

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Solution

The fourth proportional to 400,009.60, 600,020.80 and 104,521.60 is: 156,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,009.60 : 600,020.80 = 104,521.60 : x
  2. Step 2: Convert to fraction form
    400,009.60/600,020.80 = 104,521.60/x
  3. Step 3: Cross multiply
    400,009.60x = 600,020.80 × 104,521.60
  4. Step 4: Simplify right side
    400,009.60x = 62,715,134,049.28
  5. Step 5: Solve for x
    x = 62,715,134,049.28/400,009.60
  6. Step 6: Final answer
    x = 156,784.07

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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.