Home / 1,213,873.60-1,820,810.40-425,905.60

Finding the Fourth Proportional to 1,213,873.60, 1,820,810.40 and 425,905.60

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Solution

The fourth proportional to 1,213,873.60, 1,820,810.40 and 425,905.60 is: 638,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,873.60 : 1,820,810.40 = 425,905.60 : x
  2. Step 2: Convert to fraction form
    1,213,873.60/1,820,810.40 = 425,905.60/x
  3. Step 3: Cross multiply
    1,213,873.60x = 1,820,810.40 × 425,905.60
  4. Step 4: Simplify right side
    1,213,873.60x = 775,493,345,898.24
  5. Step 5: Solve for x
    x = 775,493,345,898.24/1,213,873.60
  6. Step 6: Final answer
    x = 638,858.40

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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.