Home / 665,964.48-919,032.78-424,195.32

Finding the Fourth Proportional to 665,964.48, 919,032.78 and 424,195.32

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Solution

The fourth proportional to 665,964.48, 919,032.78 and 424,195.32 is: 585,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,964.48 : 919,032.78 = 424,195.32 : x
  2. Step 2: Convert to fraction form
    665,964.48/919,032.78 = 424,195.32/x
  3. Step 3: Cross multiply
    665,964.48x = 919,032.78 × 424,195.32
  4. Step 4: Simplify right side
    665,964.48x = 389,849,404,202.59
  5. Step 5: Solve for x
    x = 389,849,404,202.59/665,964.48
  6. Step 6: Final answer
    x = 585,390.69

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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.