Home / 700,645.38-963,319.31-623,418.90

Finding the Fourth Proportional to 700,645.38, 963,319.31 and 623,418.90

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Solution

The fourth proportional to 700,645.38, 963,319.31 and 623,418.90 is: 857,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,645.38 : 963,319.31 = 623,418.90 : x
  2. Step 2: Convert to fraction form
    700,645.38/963,319.31 = 623,418.90/x
  3. Step 3: Cross multiply
    700,645.38x = 963,319.31 × 623,418.90
  4. Step 4: Simplify right side
    700,645.38x = 600,551,461,471.87
  5. Step 5: Solve for x
    x = 600,551,461,471.87/700,645.38
  6. Step 6: Final answer
    x = 857,140.40

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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.