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Finding the Fourth Proportional to 586,672.75, 809,608.73 and 318,400.75

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Solution

The fourth proportional to 586,672.75, 809,608.73 and 318,400.75 is: 439,393.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,672.75 : 809,608.73 = 318,400.75 : x
  2. Step 2: Convert to fraction form
    586,672.75/809,608.73 = 318,400.75/x
  3. Step 3: Cross multiply
    586,672.75x = 809,608.73 × 318,400.75
  4. Step 4: Simplify right side
    586,672.75x = 257,780,026,838.55
  5. Step 5: Solve for x
    x = 257,780,026,838.55/586,672.75
  6. Step 6: Final answer
    x = 439,393.22

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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.