Home / 729,215.57-1,006,317.68-402,528.77

Finding the Fourth Proportional to 729,215.57, 1,006,317.68 and 402,528.77

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Solution

The fourth proportional to 729,215.57, 1,006,317.68 and 402,528.77 is: 555,489.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,215.57 : 1,006,317.68 = 402,528.77 : x
  2. Step 2: Convert to fraction form
    729,215.57/1,006,317.68 = 402,528.77/x
  3. Step 3: Cross multiply
    729,215.57x = 1,006,317.68 × 402,528.77
  4. Step 4: Simplify right side
    729,215.57x = 405,071,819,972.29
  5. Step 5: Solve for x
    x = 405,071,819,972.29/729,215.57
  6. Step 6: Final answer
    x = 555,489.81

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1.5x scale

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.