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Finding the Fourth Proportional to 497,767.60, 746,651.40 and 420,007.60

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Solution

The fourth proportional to 497,767.60, 746,651.40 and 420,007.60 is: 630,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,767.60 : 746,651.40 = 420,007.60 : x
  2. Step 2: Convert to fraction form
    497,767.60/746,651.40 = 420,007.60/x
  3. Step 3: Cross multiply
    497,767.60x = 746,651.40 × 420,007.60
  4. Step 4: Simplify right side
    497,767.60x = 313,599,262,550.64
  5. Step 5: Solve for x
    x = 313,599,262,550.64/497,767.60
  6. Step 6: Final answer
    x = 630,011.40

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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.