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Finding the Fourth Proportional to 692,215.32, 955,255.26 and 386,288.52

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Solution

The fourth proportional to 692,215.32, 955,255.26 and 386,288.52 is: 533,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,215.32 : 955,255.26 = 386,288.52 : x
  2. Step 2: Convert to fraction form
    692,215.32/955,255.26 = 386,288.52/x
  3. Step 3: Cross multiply
    692,215.32x = 955,255.26 × 386,288.52
  4. Step 4: Simplify right side
    692,215.32x = 369,004,140,607.62
  5. Step 5: Solve for x
    x = 369,004,140,607.62/692,215.32
  6. Step 6: Final answer
    x = 533,077.11

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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.