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Finding the Fourth Proportional to 545,145.90, 818,593.65 and 368,436.30

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Solution

The fourth proportional to 545,145.90, 818,593.65 and 368,436.30 is: 553,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,145.90 : 818,593.65 = 368,436.30 : x
  2. Step 2: Convert to fraction form
    545,145.90/818,593.65 = 368,436.30/x
  3. Step 3: Cross multiply
    545,145.90x = 818,593.65 × 368,436.30
  4. Step 4: Simplify right side
    545,145.90x = 301,599,615,609.50
  5. Step 5: Solve for x
    x = 301,599,615,609.50/545,145.90
  6. Step 6: Final answer
    x = 553,245.68

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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.