Home / 665,231.88-916,941.54-519,783.36

Finding the Fourth Proportional to 665,231.88, 916,941.54 and 519,783.36

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Solution

The fourth proportional to 665,231.88, 916,941.54 and 519,783.36 is: 716,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,231.88 : 916,941.54 = 519,783.36 : x
  2. Step 2: Convert to fraction form
    665,231.88/916,941.54 = 519,783.36/x
  3. Step 3: Cross multiply
    665,231.88x = 916,941.54 × 519,783.36
  4. Step 4: Simplify right side
    665,231.88x = 476,610,954,584.77
  5. Step 5: Solve for x
    x = 476,610,954,584.77/665,231.88
  6. Step 6: Final answer
    x = 716,458.38

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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.