Home / 745,493.72-1,028,754.32-455,590.30

Finding the Fourth Proportional to 745,493.72, 1,028,754.32 and 455,590.30

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Solution

The fourth proportional to 745,493.72, 1,028,754.32 and 455,590.30 is: 628,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,493.72 : 1,028,754.32 = 455,590.30 : x
  2. Step 2: Convert to fraction form
    745,493.72/1,028,754.32 = 455,590.30/x
  3. Step 3: Cross multiply
    745,493.72x = 1,028,754.32 × 455,590.30
  4. Step 4: Simplify right side
    745,493.72x = 468,690,489,275.10
  5. Step 5: Solve for x
    x = 468,690,489,275.10/745,493.72
  6. Step 6: Final answer
    x = 628,698.11

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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.