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Finding the Fourth Proportional to 764,121.60, 1,054,425.60 and 458,265.60

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Solution

The fourth proportional to 764,121.60, 1,054,425.60 and 458,265.60 is: 632,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,121.60 : 1,054,425.60 = 458,265.60 : x
  2. Step 2: Convert to fraction form
    764,121.60/1,054,425.60 = 458,265.60/x
  3. Step 3: Cross multiply
    764,121.60x = 1,054,425.60 × 458,265.60
  4. Step 4: Simplify right side
    764,121.60x = 483,206,980,239.36
  5. Step 5: Solve for x
    x = 483,206,980,239.36/764,121.60
  6. Step 6: Final answer
    x = 632,369.22

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Double scale
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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.