Home / 926,428.20-1,389,642.30-890,998.80

Finding the Fourth Proportional to 926,428.20, 1,389,642.30 and 890,998.80

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Solution

The fourth proportional to 926,428.20, 1,389,642.30 and 890,998.80 is: 1,336,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,428.20 : 1,389,642.30 = 890,998.80 : x
  2. Step 2: Convert to fraction form
    926,428.20/1,389,642.30 = 890,998.80/x
  3. Step 3: Cross multiply
    926,428.20x = 1,389,642.30 × 890,998.80
  4. Step 4: Simplify right side
    926,428.20x = 1,238,169,621,729.24
  5. Step 5: Solve for x
    x = 1,238,169,621,729.24/926,428.20
  6. Step 6: Final answer
    x = 1,336,498.20

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Double scale
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Similar ratio
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1.5x scale

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.