Home / 1,122,628.40-1,549,016.16-639,164.24

Finding the Fourth Proportional to 1,122,628.40, 1,549,016.16 and 639,164.24

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Solution

The fourth proportional to 1,122,628.40, 1,549,016.16 and 639,164.24 is: 881,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,628.40 : 1,549,016.16 = 639,164.24 : x
  2. Step 2: Convert to fraction form
    1,122,628.40/1,549,016.16 = 639,164.24/x
  3. Step 3: Cross multiply
    1,122,628.40x = 1,549,016.16 × 639,164.24
  4. Step 4: Simplify right side
    1,122,628.40x = 990,075,736,654.12
  5. Step 5: Solve for x
    x = 990,075,736,654.12/1,122,628.40
  6. Step 6: Final answer
    x = 881,926.50

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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.