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Finding the Fourth Proportional to 647,975.85, 894,189.42 and 361,488.57

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Solution

The fourth proportional to 647,975.85, 894,189.42 and 361,488.57 is: 498,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,975.85 : 894,189.42 = 361,488.57 : x
  2. Step 2: Convert to fraction form
    647,975.85/894,189.42 = 361,488.57/x
  3. Step 3: Cross multiply
    647,975.85x = 894,189.42 × 361,488.57
  4. Step 4: Simplify right side
    647,975.85x = 323,239,254,744.93
  5. Step 5: Solve for x
    x = 323,239,254,744.93/647,975.85
  6. Step 6: Final answer
    x = 498,844.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.