Home / 727,402.60-1,003,815.59-405,112.70

Finding the Fourth Proportional to 727,402.60, 1,003,815.59 and 405,112.70

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Solution

The fourth proportional to 727,402.60, 1,003,815.59 and 405,112.70 is: 559,055.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,402.60 : 1,003,815.59 = 405,112.70 : x
  2. Step 2: Convert to fraction form
    727,402.60/1,003,815.59 = 405,112.70/x
  3. Step 3: Cross multiply
    727,402.60x = 1,003,815.59 × 405,112.70
  4. Step 4: Simplify right side
    727,402.60x = 406,658,445,045.88
  5. Step 5: Solve for x
    x = 406,658,445,045.88/727,402.60
  6. Step 6: Final answer
    x = 559,055.53

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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.