Home / 1,053,147.60-1,577,388.60-421,736.40

Finding the Fourth Proportional to 1,053,147.60, 1,577,388.60 and 421,736.40

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Solution

The fourth proportional to 1,053,147.60, 1,577,388.60 and 421,736.40 is: 631,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053,147.60 : 1,577,388.60 = 421,736.40 : x
  2. Step 2: Convert to fraction form
    1,053,147.60/1,577,388.60 = 421,736.40/x
  3. Step 3: Cross multiply
    1,053,147.60x = 1,577,388.60 × 421,736.40
  4. Step 4: Simplify right side
    1,053,147.60x = 665,242,189,565.04
  5. Step 5: Solve for x
    x = 665,242,189,565.04/1,053,147.60
  6. Step 6: Final answer
    x = 631,670.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.