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Finding the Fourth Proportional to 651,087.80, 976,631.70 and 414,891.80

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Solution

The fourth proportional to 651,087.80, 976,631.70 and 414,891.80 is: 622,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,087.80 : 976,631.70 = 414,891.80 : x
  2. Step 2: Convert to fraction form
    651,087.80/976,631.70 = 414,891.80/x
  3. Step 3: Cross multiply
    651,087.80x = 976,631.70 × 414,891.80
  4. Step 4: Simplify right side
    651,087.80x = 405,196,483,950.06
  5. Step 5: Solve for x
    x = 405,196,483,950.06/651,087.80
  6. Step 6: Final answer
    x = 622,337.70

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Double scale
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Similar ratio
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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.