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Finding the Fourth Proportional to 508,910.40, 763,365.60 and 456,422.40

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Solution

The fourth proportional to 508,910.40, 763,365.60 and 456,422.40 is: 684,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,910.40 : 763,365.60 = 456,422.40 : x
  2. Step 2: Convert to fraction form
    508,910.40/763,365.60 = 456,422.40/x
  3. Step 3: Cross multiply
    508,910.40x = 763,365.60 × 456,422.40
  4. Step 4: Simplify right side
    508,910.40x = 348,417,159,229.44
  5. Step 5: Solve for x
    x = 348,417,159,229.44/508,910.40
  6. Step 6: Final answer
    x = 684,633.60

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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.