Home / 890,643.60-1,335,965.40-859,150.80

Finding the Fourth Proportional to 890,643.60, 1,335,965.40 and 859,150.80

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Solution

The fourth proportional to 890,643.60, 1,335,965.40 and 859,150.80 is: 1,288,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,643.60 : 1,335,965.40 = 859,150.80 : x
  2. Step 2: Convert to fraction form
    890,643.60/1,335,965.40 = 859,150.80/x
  3. Step 3: Cross multiply
    890,643.60x = 1,335,965.40 × 859,150.80
  4. Step 4: Simplify right side
    890,643.60x = 1,147,795,742,182.32
  5. Step 5: Solve for x
    x = 1,147,795,742,182.32/890,643.60
  6. Step 6: Final answer
    x = 1,288,726.20

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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.