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Finding the Fourth Proportional to 875,705.88, 1,208,472 and 493,729.93

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Solution

The fourth proportional to 875,705.88, 1,208,472 and 493,729.93 is: 681,346.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,705.88 : 1,208,472 = 493,729.93 : x
  2. Step 2: Convert to fraction form
    875,705.88/1,208,472 = 493,729.93/x
  3. Step 3: Cross multiply
    875,705.88x = 1,208,472 × 493,729.93
  4. Step 4: Simplify right side
    875,705.88x = 596,658,795,966.96
  5. Step 5: Solve for x
    x = 596,658,795,966.96/875,705.88
  6. Step 6: Final answer
    x = 681,346.11

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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.