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Finding the Fourth Proportional to 630,698.10, 871,087.41 and 459,379.32

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Solution

The fourth proportional to 630,698.10, 871,087.41 and 459,379.32 is: 634,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,698.10 : 871,087.41 = 459,379.32 : x
  2. Step 2: Convert to fraction form
    630,698.10/871,087.41 = 459,379.32/x
  3. Step 3: Cross multiply
    630,698.10x = 871,087.41 × 459,379.32
  4. Step 4: Simplify right side
    630,698.10x = 400,159,542,066.36
  5. Step 5: Solve for x
    x = 400,159,542,066.36/630,698.10
  6. Step 6: Final answer
    x = 634,470.82

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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.