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Finding the Fourth Proportional to 700,647.38, 963,322.06 and 623,420.90

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Solution

The fourth proportional to 700,647.38, 963,322.06 and 623,420.90 is: 857,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,647.38 : 963,322.06 = 623,420.90 : x
  2. Step 2: Convert to fraction form
    700,647.38/963,322.06 = 623,420.90/x
  3. Step 3: Cross multiply
    700,647.38x = 963,322.06 × 623,420.90
  4. Step 4: Simplify right side
    700,647.38x = 600,555,105,635.05
  5. Step 5: Solve for x
    x = 600,555,105,635.05/700,647.38
  6. Step 6: Final answer
    x = 857,143.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.