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Finding the Fourth Proportional to 623,726.84, 860,741.86 and 351,793.88

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Solution

The fourth proportional to 623,726.84, 860,741.86 and 351,793.88 is: 485,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,726.84 : 860,741.86 = 351,793.88 : x
  2. Step 2: Convert to fraction form
    623,726.84/860,741.86 = 351,793.88/x
  3. Step 3: Cross multiply
    623,726.84x = 860,741.86 × 351,793.88
  4. Step 4: Simplify right side
    623,726.84x = 302,803,718,607.82
  5. Step 5: Solve for x
    x = 302,803,718,607.82/623,726.84
  6. Step 6: Final answer
    x = 485,474.89

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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.