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Finding the Fourth Proportional to 696,655.06, 961,371.44 and 390,732.03

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Solution

The fourth proportional to 696,655.06, 961,371.44 and 390,732.03 is: 539,203.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,655.06 : 961,371.44 = 390,732.03 : x
  2. Step 2: Convert to fraction form
    696,655.06/961,371.44 = 390,732.03/x
  3. Step 3: Cross multiply
    696,655.06x = 961,371.44 × 390,732.03
  4. Step 4: Simplify right side
    696,655.06x = 375,638,614,335.22
  5. Step 5: Solve for x
    x = 375,638,614,335.22/696,655.06
  6. Step 6: Final answer
    x = 539,203.17

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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.