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Finding the Fourth Proportional to 517,897.45, 776,952.68 and 218,378.89

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Solution

The fourth proportional to 517,897.45, 776,952.68 and 218,378.89 is: 327,613.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,897.45 : 776,952.68 = 218,378.89 : x
  2. Step 2: Convert to fraction form
    517,897.45/776,952.68 = 218,378.89/x
  3. Step 3: Cross multiply
    517,897.45x = 776,952.68 × 218,378.89
  4. Step 4: Simplify right side
    517,897.45x = 169,670,061,192.44
  5. Step 5: Solve for x
    x = 169,670,061,192.44/517,897.45
  6. Step 6: Final answer
    x = 327,613.24

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1.5x scale

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.