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Finding the Fourth Proportional to 521,410.25, 719,546.15 and 282,946.25

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Solution

The fourth proportional to 521,410.25, 719,546.15 and 282,946.25 is: 390,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,410.25 : 719,546.15 = 282,946.25 : x
  2. Step 2: Convert to fraction form
    521,410.25/719,546.15 = 282,946.25/x
  3. Step 3: Cross multiply
    521,410.25x = 719,546.15 × 282,946.25
  4. Step 4: Simplify right side
    521,410.25x = 203,592,883,429.71
  5. Step 5: Solve for x
    x = 203,592,883,429.71/521,410.25
  6. Step 6: Final answer
    x = 390,465.83

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Double scale
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Similar ratio
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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.