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Finding the Fourth Proportional to 545,328.09, 816,774.01 and 395,223.80

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Solution

The fourth proportional to 545,328.09, 816,774.01 and 395,223.80 is: 591,952.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,328.09 : 816,774.01 = 395,223.80 : x
  2. Step 2: Convert to fraction form
    545,328.09/816,774.01 = 395,223.80/x
  3. Step 3: Cross multiply
    545,328.09x = 816,774.01 × 395,223.80
  4. Step 4: Simplify right side
    545,328.09x = 322,808,527,421.82
  5. Step 5: Solve for x
    x = 322,808,527,421.82/545,328.09
  6. Step 6: Final answer
    x = 591,952.87

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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.