Home / 727,419.18-1,003,869.45-405,129.25

Finding the Fourth Proportional to 727,419.18, 1,003,869.45 and 405,129.25

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Solution

The fourth proportional to 727,419.18, 1,003,869.45 and 405,129.25 is: 559,095.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,419.18 : 1,003,869.45 = 405,129.25 : x
  2. Step 2: Convert to fraction form
    727,419.18/1,003,869.45 = 405,129.25/x
  3. Step 3: Cross multiply
    727,419.18x = 1,003,869.45 × 405,129.25
  4. Step 4: Simplify right side
    727,419.18x = 406,696,872,984.48
  5. Step 5: Solve for x
    x = 406,696,872,984.48/727,419.18
  6. Step 6: Final answer
    x = 559,095.61

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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.