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Finding the Fourth Proportional to 480,690.30, 721,035.45 and 480,690.30

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Solution

The fourth proportional to 480,690.30, 721,035.45 and 480,690.30 is: 721,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,690.30 : 721,035.45 = 480,690.30 : x
  2. Step 2: Convert to fraction form
    480,690.30/721,035.45 = 480,690.30/x
  3. Step 3: Cross multiply
    480,690.30x = 721,035.45 × 480,690.30
  4. Step 4: Simplify right side
    480,690.30x = 346,594,746,771.14
  5. Step 5: Solve for x
    x = 346,594,746,771.14/480,690.30
  6. Step 6: Final answer
    x = 721,035.45

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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.