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Finding the Fourth Proportional to 586,680.68, 809,619.67 and 318,408.68

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Solution

The fourth proportional to 586,680.68, 809,619.67 and 318,408.68 is: 439,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,680.68 : 809,619.67 = 318,408.68 : x
  2. Step 2: Convert to fraction form
    586,680.68/809,619.67 = 318,408.68/x
  3. Step 3: Cross multiply
    586,680.68x = 809,619.67 × 318,408.68
  4. Step 4: Simplify right side
    586,680.68x = 257,789,932,848.80
  5. Step 5: Solve for x
    x = 257,789,932,848.80/586,680.68
  6. Step 6: Final answer
    x = 439,404.16

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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.