Home / 1,319,984.30-1,980,010.59-421,425.26

Finding the Fourth Proportional to 1,319,984.30, 1,980,010.59 and 421,425.26

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Solution

The fourth proportional to 1,319,984.30, 1,980,010.59 and 421,425.26 is: 632,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,984.30 : 1,980,010.59 = 421,425.26 : x
  2. Step 2: Convert to fraction form
    1,319,984.30/1,980,010.59 = 421,425.26/x
  3. Step 3: Cross multiply
    1,319,984.30x = 1,980,010.59 × 421,425.26
  4. Step 4: Simplify right side
    1,319,984.30x = 834,426,477,693.50
  5. Step 5: Solve for x
    x = 834,426,477,693.50/1,319,984.30
  6. Step 6: Final answer
    x = 632,148.79

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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.