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Finding the Fourth Proportional to 613,524.60, 920,439.54 and 487,639.80

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Solution

The fourth proportional to 613,524.60, 920,439.54 and 487,639.80 is: 731,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,524.60 : 920,439.54 = 487,639.80 : x
  2. Step 2: Convert to fraction form
    613,524.60/920,439.54 = 487,639.80/x
  3. Step 3: Cross multiply
    613,524.60x = 920,439.54 × 487,639.80
  4. Step 4: Simplify right side
    613,524.60x = 448,842,953,197.69
  5. Step 5: Solve for x
    x = 448,842,953,197.69/613,524.60
  6. Step 6: Final answer
    x = 731,581.02

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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.