Home / 745,027.50-1,028,137.95-405,498.18

Finding the Fourth Proportional to 745,027.50, 1,028,137.95 and 405,498.18

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Solution

The fourth proportional to 745,027.50, 1,028,137.95 and 405,498.18 is: 559,587.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,027.50 : 1,028,137.95 = 405,498.18 : x
  2. Step 2: Convert to fraction form
    745,027.50/1,028,137.95 = 405,498.18/x
  3. Step 3: Cross multiply
    745,027.50x = 1,028,137.95 × 405,498.18
  4. Step 4: Simplify right side
    745,027.50x = 416,908,067,513.93
  5. Step 5: Solve for x
    x = 416,908,067,513.93/745,027.50
  6. Step 6: Final answer
    x = 559,587.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.