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Finding the Fourth Proportional to 521,362.60, 719,109.36 and 478,480.59

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Solution

The fourth proportional to 521,362.60, 719,109.36 and 478,480.59 is: 659,962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,362.60 : 719,109.36 = 478,480.59 : x
  2. Step 2: Convert to fraction form
    521,362.60/719,109.36 = 478,480.59/x
  3. Step 3: Cross multiply
    521,362.60x = 719,109.36 × 478,480.59
  4. Step 4: Simplify right side
    521,362.60x = 344,079,870,847.32
  5. Step 5: Solve for x
    x = 344,079,870,847.32/521,362.60
  6. Step 6: Final answer
    x = 659,962.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.