Home / 1,389,371.20-2,084,056.80-442,837.60

Finding the Fourth Proportional to 1,389,371.20, 2,084,056.80 and 442,837.60

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Solution

The fourth proportional to 1,389,371.20, 2,084,056.80 and 442,837.60 is: 664,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,371.20 : 2,084,056.80 = 442,837.60 : x
  2. Step 2: Convert to fraction form
    1,389,371.20/2,084,056.80 = 442,837.60/x
  3. Step 3: Cross multiply
    1,389,371.20x = 2,084,056.80 × 442,837.60
  4. Step 4: Simplify right side
    1,389,371.20x = 922,898,711,575.68
  5. Step 5: Solve for x
    x = 922,898,711,575.68/1,389,371.20
  6. Step 6: Final answer
    x = 664,256.40

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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.