Home / 1,319,376.60-1,979,064.90-420,884.10

Finding the Fourth Proportional to 1,319,376.60, 1,979,064.90 and 420,884.10

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Solution

The fourth proportional to 1,319,376.60, 1,979,064.90 and 420,884.10 is: 631,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,376.60 : 1,979,064.90 = 420,884.10 : x
  2. Step 2: Convert to fraction form
    1,319,376.60/1,979,064.90 = 420,884.10/x
  3. Step 3: Cross multiply
    1,319,376.60x = 1,979,064.90 × 420,884.10
  4. Step 4: Simplify right side
    1,319,376.60x = 832,956,949,278.09
  5. Step 5: Solve for x
    x = 832,956,949,278.09/1,319,376.60
  6. Step 6: Final answer
    x = 631,326.15

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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.