Home / 731,645.72-1,009,710.36-409,336.64

Finding the Fourth Proportional to 731,645.72, 1,009,710.36 and 409,336.64

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Solution

The fourth proportional to 731,645.72, 1,009,710.36 and 409,336.64 is: 564,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,645.72 : 1,009,710.36 = 409,336.64 : x
  2. Step 2: Convert to fraction form
    731,645.72/1,009,710.36 = 409,336.64/x
  3. Step 3: Cross multiply
    731,645.72x = 1,009,710.36 × 409,336.64
  4. Step 4: Simplify right side
    731,645.72x = 413,311,446,135.59
  5. Step 5: Solve for x
    x = 413,311,446,135.59/731,645.72
  6. Step 6: Final answer
    x = 564,906.53

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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.