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Finding the Fourth Proportional to 651,215.20, 976,822.80 and 651,215.20

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Solution

The fourth proportional to 651,215.20, 976,822.80 and 651,215.20 is: 976,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,215.20 : 976,822.80 = 651,215.20 : x
  2. Step 2: Convert to fraction form
    651,215.20/976,822.80 = 651,215.20/x
  3. Step 3: Cross multiply
    651,215.20x = 976,822.80 × 651,215.20
  4. Step 4: Simplify right side
    651,215.20x = 636,121,855,066.56
  5. Step 5: Solve for x
    x = 636,121,855,066.56/651,215.20
  6. Step 6: Final answer
    x = 976,822.80

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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.