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Finding the Fourth Proportional to 614,004.30, 921,006.45 and 456,540.30

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Solution

The fourth proportional to 614,004.30, 921,006.45 and 456,540.30 is: 684,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,004.30 : 921,006.45 = 456,540.30 : x
  2. Step 2: Convert to fraction form
    614,004.30/921,006.45 = 456,540.30/x
  3. Step 3: Cross multiply
    614,004.30x = 921,006.45 × 456,540.30
  4. Step 4: Simplify right side
    614,004.30x = 420,476,560,984.94
  5. Step 5: Solve for x
    x = 420,476,560,984.94/614,004.30
  6. Step 6: Final answer
    x = 684,810.45

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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.