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Finding the Fourth Proportional to 678,005.04, 935,995.32 and 477,695.28

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Solution

The fourth proportional to 678,005.04, 935,995.32 and 477,695.28 is: 659,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,005.04 : 935,995.32 = 477,695.28 : x
  2. Step 2: Convert to fraction form
    678,005.04/935,995.32 = 477,695.28/x
  3. Step 3: Cross multiply
    678,005.04x = 935,995.32 × 477,695.28
  4. Step 4: Simplify right side
    678,005.04x = 447,120,546,466.09
  5. Step 5: Solve for x
    x = 447,120,546,466.09/678,005.04
  6. Step 6: Final answer
    x = 659,464.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.