Home / 449,323.43-619,328.09-318,545.69

Finding the Fourth Proportional to 449,323.43, 619,328.09 and 318,545.69

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Solution

The fourth proportional to 449,323.43, 619,328.09 and 318,545.69 is: 439,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,323.43 : 619,328.09 = 318,545.69 : x
  2. Step 2: Convert to fraction form
    449,323.43/619,328.09 = 318,545.69/x
  3. Step 3: Cross multiply
    449,323.43x = 619,328.09 × 318,545.69
  4. Step 4: Simplify right side
    449,323.43x = 197,284,291,465.16
  5. Step 5: Solve for x
    x = 197,284,291,465.16/449,323.43
  6. Step 6: Final answer
    x = 439,069.68

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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.