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Finding the Fourth Proportional to 761,695.12, 1,051,617 and 490,234.48

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Solution

The fourth proportional to 761,695.12, 1,051,617 and 490,234.48 is: 676,831.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,695.12 : 1,051,617 = 490,234.48 : x
  2. Step 2: Convert to fraction form
    761,695.12/1,051,617 = 490,234.48/x
  3. Step 3: Cross multiply
    761,695.12x = 1,051,617 × 490,234.48
  4. Step 4: Simplify right side
    761,695.12x = 515,538,913,154.16
  5. Step 5: Solve for x
    x = 515,538,913,154.16/761,695.12
  6. Step 6: Final answer
    x = 676,831.06

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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.