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Finding the Fourth Proportional to 545,328.59, 816,774.76 and 395,224.30

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Solution

The fourth proportional to 545,328.59, 816,774.76 and 395,224.30 is: 591,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,328.59 : 816,774.76 = 395,224.30 : x
  2. Step 2: Convert to fraction form
    545,328.59/816,774.76 = 395,224.30/x
  3. Step 3: Cross multiply
    545,328.59x = 816,774.76 × 395,224.30
  4. Step 4: Simplify right side
    545,328.59x = 322,809,232,778.67
  5. Step 5: Solve for x
    x = 322,809,232,778.67/545,328.59
  6. Step 6: Final answer
    x = 591,953.63

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1.5x scale

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.