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Finding the Fourth Proportional to 1,254,959.03, 1,731,663.16 and 738,405.83

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Solution

The fourth proportional to 1,254,959.03, 1,731,663.16 and 738,405.83 is: 1,018,893.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,959.03 : 1,731,663.16 = 738,405.83 : x
  2. Step 2: Convert to fraction form
    1,254,959.03/1,731,663.16 = 738,405.83/x
  3. Step 3: Cross multiply
    1,254,959.03x = 1,731,663.16 × 738,405.83
  4. Step 4: Simplify right side
    1,254,959.03x = 1,278,670,175,423.37
  5. Step 5: Solve for x
    x = 1,278,670,175,423.37/1,254,959.03
  6. Step 6: Final answer
    x = 1,018,893.96

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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.