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Finding the Fourth Proportional to 586,625.16, 809,542.72 and 318,353.16

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Solution

The fourth proportional to 586,625.16, 809,542.72 and 318,353.16 is: 439,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,625.16 : 809,542.72 = 318,353.16 : x
  2. Step 2: Convert to fraction form
    586,625.16/809,542.72 = 318,353.16/x
  3. Step 3: Cross multiply
    586,625.16x = 809,542.72 × 318,353.16
  4. Step 4: Simplify right side
    586,625.16x = 257,720,479,235.33
  5. Step 5: Solve for x
    x = 257,720,479,235.33/586,625.16
  6. Step 6: Final answer
    x = 439,327.36

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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.