Home / 1,328,275.40-1,992,199.26-381,430.76

Finding the Fourth Proportional to 1,328,275.40, 1,992,199.26 and 381,430.76

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Solution

The fourth proportional to 1,328,275.40, 1,992,199.26 and 381,430.76 is: 572,084.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,275.40 : 1,992,199.26 = 381,430.76 : x
  2. Step 2: Convert to fraction form
    1,328,275.40/1,992,199.26 = 381,430.76/x
  3. Step 3: Cross multiply
    1,328,275.40x = 1,992,199.26 × 381,430.76
  4. Step 4: Simplify right side
    1,328,275.40x = 759,886,077,813.24
  5. Step 5: Solve for x
    x = 759,886,077,813.24/1,328,275.40
  6. Step 6: Final answer
    x = 572,084.73

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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.