Home / 1,218,274.48-1,681,238.60-666,980.88

Finding the Fourth Proportional to 1,218,274.48, 1,681,238.60 and 666,980.88

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Solution

The fourth proportional to 1,218,274.48, 1,681,238.60 and 666,980.88 is: 920,444.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,274.48 : 1,681,238.60 = 666,980.88 : x
  2. Step 2: Convert to fraction form
    1,218,274.48/1,681,238.60 = 666,980.88/x
  3. Step 3: Cross multiply
    1,218,274.48x = 1,681,238.60 × 666,980.88
  4. Step 4: Simplify right side
    1,218,274.48x = 1,121,353,993,779.60
  5. Step 5: Solve for x
    x = 1,121,353,993,779.60/1,218,274.48
  6. Step 6: Final answer
    x = 920,444.46

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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.