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Finding the Fourth Proportional to 457,166.10, 638,457.90 and 457,166.10

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Solution

The fourth proportional to 457,166.10, 638,457.90 and 457,166.10 is: 638,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,166.10 : 638,457.90 = 457,166.10 : x
  2. Step 2: Convert to fraction form
    457,166.10/638,457.90 = 457,166.10/x
  3. Step 3: Cross multiply
    457,166.10x = 638,457.90 × 457,166.10
  4. Step 4: Simplify right side
    457,166.10x = 291,881,308,157.19
  5. Step 5: Solve for x
    x = 291,881,308,157.19/457,166.10
  6. Step 6: Final answer
    x = 638,457.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.