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Finding the Fourth Proportional to 385,594.80, 578,046.60 and 343,604.40

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Solution

The fourth proportional to 385,594.80, 578,046.60 and 343,604.40 is: 515,098.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,594.80 : 578,046.60 = 343,604.40 : x
  2. Step 2: Convert to fraction form
    385,594.80/578,046.60 = 343,604.40/x
  3. Step 3: Cross multiply
    385,594.80x = 578,046.60 × 343,604.40
  4. Step 4: Simplify right side
    385,594.80x = 198,619,355,165.04
  5. Step 5: Solve for x
    x = 198,619,355,165.04/385,594.80
  6. Step 6: Final answer
    x = 515,098.64

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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.