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Finding the Fourth Proportional to 518,670.84, 778,006.38 and 163,712.52

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Solution

The fourth proportional to 518,670.84, 778,006.38 and 163,712.52 is: 245,568.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,670.84 : 778,006.38 = 163,712.52 : x
  2. Step 2: Convert to fraction form
    518,670.84/778,006.38 = 163,712.52/x
  3. Step 3: Cross multiply
    518,670.84x = 778,006.38 × 163,712.52
  4. Step 4: Simplify right side
    518,670.84x = 127,369,385,045.88
  5. Step 5: Solve for x
    x = 127,369,385,045.88/518,670.84
  6. Step 6: Final answer
    x = 245,568.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.