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Finding the Fourth Proportional to 666,904.33, 920,415.59 and 380,358.73

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Solution

The fourth proportional to 666,904.33, 920,415.59 and 380,358.73 is: 524,945.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,904.33 : 920,415.59 = 380,358.73 : x
  2. Step 2: Convert to fraction form
    666,904.33/920,415.59 = 380,358.73/x
  3. Step 3: Cross multiply
    666,904.33x = 920,415.59 × 380,358.73
  4. Step 4: Simplify right side
    666,904.33x = 350,088,104,884.60
  5. Step 5: Solve for x
    x = 350,088,104,884.60/666,904.33
  6. Step 6: Final answer
    x = 524,945.02

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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.