Home / 645,149.50-961,473.64-611,557.18

Finding the Fourth Proportional to 645,149.50, 961,473.64 and 611,557.18

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Solution

The fourth proportional to 645,149.50, 961,473.64 and 611,557.18 is: 911,410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,149.50 : 961,473.64 = 611,557.18 : x
  2. Step 2: Convert to fraction form
    645,149.50/961,473.64 = 611,557.18/x
  3. Step 3: Cross multiply
    645,149.50x = 961,473.64 × 611,557.18
  4. Step 4: Simplify right side
    645,149.50x = 587,996,107,922.74
  5. Step 5: Solve for x
    x = 587,996,107,922.74/645,149.50
  6. Step 6: Final answer
    x = 911,410.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.