Home / 1,291,297-1,781,905.62-718,316.68

Finding the Fourth Proportional to 1,291,297, 1,781,905.62 and 718,316.68

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Solution

The fourth proportional to 1,291,297, 1,781,905.62 and 718,316.68 is: 991,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,297 : 1,781,905.62 = 718,316.68 : x
  2. Step 2: Convert to fraction form
    1,291,297/1,781,905.62 = 718,316.68/x
  3. Step 3: Cross multiply
    1,291,297x = 1,781,905.62 × 718,316.68
  4. Step 4: Simplify right side
    1,291,297x = 1,279,972,529,031.74
  5. Step 5: Solve for x
    x = 1,279,972,529,031.74/1,291,297
  6. Step 6: Final answer
    x = 991,230.16

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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.