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Finding the Fourth Proportional to 486,140.68, 670,830.42 and 304,794.64

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Solution

The fourth proportional to 486,140.68, 670,830.42 and 304,794.64 is: 420,589.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,140.68 : 670,830.42 = 304,794.64 : x
  2. Step 2: Convert to fraction form
    486,140.68/670,830.42 = 304,794.64/x
  3. Step 3: Cross multiply
    486,140.68x = 670,830.42 × 304,794.64
  4. Step 4: Simplify right side
    486,140.68x = 204,465,516,364.95
  5. Step 5: Solve for x
    x = 204,465,516,364.95/486,140.68
  6. Step 6: Final answer
    x = 420,589.19

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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.