Home / 745,827.90-1,029,215.28-455,925

Finding the Fourth Proportional to 745,827.90, 1,029,215.28 and 455,925

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Solution

The fourth proportional to 745,827.90, 1,029,215.28 and 455,925 is: 629,159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,827.90 : 1,029,215.28 = 455,925 : x
  2. Step 2: Convert to fraction form
    745,827.90/1,029,215.28 = 455,925/x
  3. Step 3: Cross multiply
    745,827.90x = 1,029,215.28 × 455,925
  4. Step 4: Simplify right side
    745,827.90x = 469,244,976,534
  5. Step 5: Solve for x
    x = 469,244,976,534/745,827.90
  6. Step 6: Final answer
    x = 629,159.86

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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.