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Finding the Fourth Proportional to 1,531,615.15, 2,113,593.91 and 958,971.07

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Solution

The fourth proportional to 1,531,615.15, 2,113,593.91 and 958,971.07 is: 1,323,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531,615.15 : 2,113,593.91 = 958,971.07 : x
  2. Step 2: Convert to fraction form
    1,531,615.15/2,113,593.91 = 958,971.07/x
  3. Step 3: Cross multiply
    1,531,615.15x = 2,113,593.91 × 958,971.07
  4. Step 4: Simplify right side
    1,531,615.15x = 2,026,875,413,418.18
  5. Step 5: Solve for x
    x = 2,026,875,413,418.18/1,531,615.15
  6. Step 6: Final answer
    x = 1,323,358.16

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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.