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Finding the Fourth Proportional to 860,148.84, 1,187,045.92 and 478,182

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Solution

The fourth proportional to 860,148.84, 1,187,045.92 and 478,182 is: 659,913.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,148.84 : 1,187,045.92 = 478,182 : x
  2. Step 2: Convert to fraction form
    860,148.84/1,187,045.92 = 478,182/x
  3. Step 3: Cross multiply
    860,148.84x = 1,187,045.92 × 478,182
  4. Step 4: Simplify right side
    860,148.84x = 567,623,992,117.44
  5. Step 5: Solve for x
    x = 567,623,992,117.44/860,148.84
  6. Step 6: Final answer
    x = 659,913.69

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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.