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Finding the Fourth Proportional to 630,286.97, 869,761.03 and 358,317.12

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Solution

The fourth proportional to 630,286.97, 869,761.03 and 358,317.12 is: 494,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,286.97 : 869,761.03 = 358,317.12 : x
  2. Step 2: Convert to fraction form
    630,286.97/869,761.03 = 358,317.12/x
  3. Step 3: Cross multiply
    630,286.97x = 869,761.03 × 358,317.12
  4. Step 4: Simplify right side
    630,286.97x = 311,650,265,566.25
  5. Step 5: Solve for x
    x = 311,650,265,566.25/630,286.97
  6. Step 6: Final answer
    x = 494,457.73

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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.