Home / 403,837.72-556,918.06-319,157.08

Finding the Fourth Proportional to 403,837.72, 556,918.06 and 319,157.08

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Solution

The fourth proportional to 403,837.72, 556,918.06 and 319,157.08 is: 440,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,837.72 : 556,918.06 = 319,157.08 : x
  2. Step 2: Convert to fraction form
    403,837.72/556,918.06 = 319,157.08/x
  3. Step 3: Cross multiply
    403,837.72x = 556,918.06 × 319,157.08
  4. Step 4: Simplify right side
    403,837.72x = 177,744,341,828.87
  5. Step 5: Solve for x
    x = 177,744,341,828.87/403,837.72
  6. Step 6: Final answer
    x = 440,138.04

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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.