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Finding the Fourth Proportional to 497,771.60, 746,657.40 and 420,011.60

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Solution

The fourth proportional to 497,771.60, 746,657.40 and 420,011.60 is: 630,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,771.60 : 746,657.40 = 420,011.60 : x
  2. Step 2: Convert to fraction form
    497,771.60/746,657.40 = 420,011.60/x
  3. Step 3: Cross multiply
    497,771.60x = 746,657.40 × 420,011.60
  4. Step 4: Simplify right side
    497,771.60x = 313,604,769,225.84
  5. Step 5: Solve for x
    x = 313,604,769,225.84/497,771.60
  6. Step 6: Final answer
    x = 630,017.40

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Similar ratio
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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.