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Finding the Fourth Proportional to 545,126.40, 818,564.40 and 368,416.80

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Solution

The fourth proportional to 545,126.40, 818,564.40 and 368,416.80 is: 553,216.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,126.40 : 818,564.40 = 368,416.80 : x
  2. Step 2: Convert to fraction form
    545,126.40/818,564.40 = 368,416.80/x
  3. Step 3: Cross multiply
    545,126.40x = 818,564.40 × 368,416.80
  4. Step 4: Simplify right side
    545,126.40x = 301,572,876,841.92
  5. Step 5: Solve for x
    x = 301,572,876,841.92/545,126.40
  6. Step 6: Final answer
    x = 553,216.42

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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.