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Finding the Fourth Proportional to 472,454.80, 708,682.20 and 340,578.70

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Solution

The fourth proportional to 472,454.80, 708,682.20 and 340,578.70 is: 510,868.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,454.80 : 708,682.20 = 340,578.70 : x
  2. Step 2: Convert to fraction form
    472,454.80/708,682.20 = 340,578.70/x
  3. Step 3: Cross multiply
    472,454.80x = 708,682.20 × 340,578.70
  4. Step 4: Simplify right side
    472,454.80x = 241,362,062,389.14
  5. Step 5: Solve for x
    x = 241,362,062,389.14/472,454.80
  6. Step 6: Final answer
    x = 510,868.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.