Home / 1,319,349.60-1,979,024.40-420,857.10

Finding the Fourth Proportional to 1,319,349.60, 1,979,024.40 and 420,857.10

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Solution

The fourth proportional to 1,319,349.60, 1,979,024.40 and 420,857.10 is: 631,285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,349.60 : 1,979,024.40 = 420,857.10 : x
  2. Step 2: Convert to fraction form
    1,319,349.60/1,979,024.40 = 420,857.10/x
  3. Step 3: Cross multiply
    1,319,349.60x = 1,979,024.40 × 420,857.10
  4. Step 4: Simplify right side
    1,319,349.60x = 832,886,469,813.24
  5. Step 5: Solve for x
    x = 832,886,469,813.24/1,319,349.60
  6. Step 6: Final answer
    x = 631,285.65

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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.