Home / 745,455.40-1,118,192.82-212,993.80

Finding the Fourth Proportional to 745,455.40, 1,118,192.82 and 212,993.80

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Solution

The fourth proportional to 745,455.40, 1,118,192.82 and 212,993.80 is: 319,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,455.40 : 1,118,192.82 = 212,993.80 : x
  2. Step 2: Convert to fraction form
    745,455.40/1,118,192.82 = 212,993.80/x
  3. Step 3: Cross multiply
    745,455.40x = 1,118,192.82 × 212,993.80
  4. Step 4: Simplify right side
    745,455.40x = 238,168,137,864.52
  5. Step 5: Solve for x
    x = 238,168,137,864.52/745,455.40
  6. Step 6: Final answer
    x = 319,493.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.