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Finding the Fourth Proportional to 545,813.60, 818,720.40 and 309,617.60

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Solution

The fourth proportional to 545,813.60, 818,720.40 and 309,617.60 is: 464,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,813.60 : 818,720.40 = 309,617.60 : x
  2. Step 2: Convert to fraction form
    545,813.60/818,720.40 = 309,617.60/x
  3. Step 3: Cross multiply
    545,813.60x = 818,720.40 × 309,617.60
  4. Step 4: Simplify right side
    545,813.60x = 253,490,245,319.04
  5. Step 5: Solve for x
    x = 253,490,245,319.04/545,813.60
  6. Step 6: Final answer
    x = 464,426.40

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Similar ratio
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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.