Home / 729,215.44-1,006,317.51-402,528.65

Finding the Fourth Proportional to 729,215.44, 1,006,317.51 and 402,528.65

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Solution

The fourth proportional to 729,215.44, 1,006,317.51 and 402,528.65 is: 555,489.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,215.44 : 1,006,317.51 = 402,528.65 : x
  2. Step 2: Convert to fraction form
    729,215.44/1,006,317.51 = 402,528.65/x
  3. Step 3: Cross multiply
    729,215.44x = 1,006,317.51 × 402,528.65
  4. Step 4: Simplify right side
    729,215.44x = 405,071,625,060.86
  5. Step 5: Solve for x
    x = 405,071,625,060.86/729,215.44
  6. Step 6: Final answer
    x = 555,489.64

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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.